Rather than hardcode two builders, allow builders to specify a `builder-detect` trigger. This trigger can be used to specify if the builder should or should not be used for an application. Each builder takes stdin and can decide if it wants to emit it or emit it's own image source type.
If the final value is empty, then Dokku will default to herokuish (and cnb once that is stable). In addition, a future change may allow users to manually specify a builder in the case they wish to override the choice selected by Dokku.
This change enables users to build custom builder plugins and have those plugins used for building an image asset. By way of example, an enterprising user could create a `builder-lambda` based on lambci, and then pair this with a scheduler plugin that updates a lambda function on AWS. Alternatively, a user might decide they wish to place their Dockerfile in a specific directory for their applications - such as an `_infrastructure` directory - and create a plugin to override how that is detected within Dokku.
# History
## 0.23.9
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.23.9/bootstrap.sh
sudo DOKKU_TAG=v0.23.9 bash bootstrap.sh
```
### Refactors
- #4445: @josegonzalez Bump azure template and formula directly on release
### Documentation
- #4444: @josegonzalez Uuse updated links for documentation
- #4439: @RyukerLiu View Doc redirect not working. Change to use direct link
# History
## 0.23.8
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.23.8/bootstrap.sh
sudo DOKKU_TAG=v0.23.8 bash bootstrap.sh
```
### Bug Fixes
- #4437: @josegonzalez Switch to using GIT_DIR environment variable to fix Centos 7 support
- #4436: @josegonzalez Properly handle directory change when cleaning .git directory
### New Features
- #4428: @josegonzalez Bump azure ARM quickstart template on release
### Documentation
- #4435: @josegonzalez Change page title based on current page
- #4427: @josegonzalez Change process management doc references to make more sense
### Other
- #4438: @josegonzalez Split out nginx tests further to decrease overall CI runtime
- #4430: @dependabot-preview[bot] chore(deps): bump jetty-servlet from 11.0.0 to 11.0.1 in /tests/apps/java
# History
## 0.23.7
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.23.7/bootstrap.sh
sudo DOKKU_TAG=v0.23.7 bash bootstrap.sh
```
### Bug Fixes
- #4421: @josegonzalez Keep the git directory for worktree-enabled installations
### New Features
- #4420: @josegonzalez Add ability to specify X-Forwarded-Ssl header for proxied requests
### Documentation
- #4422: @josegonzalez Add warning regarding shallow clone pushes
- #4417: @andrewk17 Correct vector sink example command
- #4414: @josegonzalez Use correct html for offsite digitalocean link
- #4413: @josegonzalez Fix SSL documentation link in troubleshooting docs
### Other
- #4423: @josegonzalez Drop unused sigil packaging code
- #4418: @josegonzalez Drop unused skip-restart flag for proxy:disable
Previously, checking if an app was deployed actually checked if there were any running processes. This is not only incorrect, but also fails to take into account applications that do not have running processes and are only used for one-off commands.
This fix migrates apps to the new "deployed" property which is set in core-post-deploy. The result is a slightly faster "deployed" check that is correct and allows non-scaled apps to actually work.
Closes#4398
# History
## 0.23.3
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.23.3/bootstrap.sh
sudo DOKKU_TAG=v0.23.3 bash bootstrap.sh
```
### Bug Fixes
- #4397: @josegonzalez Correctly handle environment variables in deployment tasks for Cloud Native Buildpacks
- #4394: @josegonzalez Swap order of arguments on config-get call
### New Features
- #4395: @josegonzalez Add environment variable support to CNB-based containers
### Refactors
- #4393: @josegonzalez Use docker-image-labeler in cnb builder-build trigger
### Documentation
- #4396: @nerg4l Invalid link to Herokuish Buildpack Deployment in Cloud Native Buildpacks
### Tests
- #4390: @josegonzalez Run tests faster by not cloning the buildpack each time
### Other
- #4389: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 188 to 189 in /tests/apps/php
This will allow dropping many of the "source config/functions" calls littered over the codebase. Plugin triggers are the way to perform cross-plugin communication :)
# History
## 0.23.2
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.23.2/bootstrap.sh
sudo DOKKU_TAG=v0.23.2 bash bootstrap.sh
```
### Bug Fixes
- #4388: @josegonzalez Do not inject max-size option when not using local or json-file log-drivers
- #4386: @josegonzalez Update to docker-image-labeler that handles in-use images
### New Features
- #4387: @josegonzalez Only warn if the vector container is stopped when fetching logs
- #4372: @josegonzalez Add ability to clear an individual resource
- #4384: @josegonzalez Add support for injected cron entries from external plugins
### Refactors
- #4373: @josegonzalez Do not attempt to extract Procfile in ps:scale
### Documentation
- #4377: @josegonzalez Add note about the dokku user cron being overwritten by Dokku
### Other
- #3757: @pickettd Add provision line to Windows Vagrant box for dokku-installer
This allows alternative plugins - such as dokku-letsencrypt - to inject scheduled cron tasks into the cron system used by Dokku. Cron systems can choose to include or not include a cron task based on the specified scheduler, and can also optionally use a third parameter to store arbitrary information.
# History
## 0.23.0
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.23.0/bootstrap.sh
sudo DOKKU_TAG=v0.23.0 bash bootstrap.sh
```
See the [0.23.0 migration guide](/docs/appendices/0.23.0-migration-guide.md) for more information on migrating to 0.23.0.
### Bug Fixes
- #4356: @josegonzalez Do not retag images unnecessarily
- #4355: @josegonzalez Allow underscores in vector schemes
- #4350: @josegonzalez Add missing trigger to events plugin
- #4348: @josegonzalez Correct app-specific shell handling
- #4333: @josegonzalez Drop tmpdir environment variables when not running as dokku user
### New Features
- #4336: @josegonzalez Add ability to manage stacks on an app or global level …
- #4354: @josegonzalez Log all triggers called by golang in trace output
- #4300: @AubreyHewes allow disabling hsts globally and explicitly enable per app
- #4337: @josegonzalez Add logrotation to container log files
- #4318: @josegonzalez Add ability to set client max body size via nginx:set
- #4343: @josegonzalez feat: add initial scheduled task implementation
- #4297: @josegonzalez Add support for cloning/syncing from a remote repository
- #4340: @bjornpost Allow configuring x-forwarded-* proxy headers via nginx:set
### Refactors
- #4349: @josegonzalez Remove need for internal dokku calls
### Documentation
- #4347: @fomojola Add post-deploy webhook to list of community plugins
- #4342: @AubreyHewes Point to current testing docs
- #4341: @josegonzalez Add testing link to contributing.md
### Tests
- #4352: @josegonzalez Add a test for application renames
- #4351: @josegonzalez Set hostname for CI runs
- #4322: @josegonzalez Switch to Github Actions for CI
### Other
- #4353: @josegonzalez Drop unused flag introduced by logs max-size feature
# History
## 0.22.9
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.9/bootstrap.sh
sudo DOKKU_TAG=v0.22.9 bash bootstrap.sh
```
### Bug Fixes
- #4334: @josegonzalez allow git pushes to apps that already exist but have old names
- #4335: @josegonzalez Add error checking to plugin:install and plugin:update
- #4338: @josegonzalez Strip trailing slashes in hostname from web installer
- #4332: @josegonzalez Correct aws release check in release-plugin script
- #4311: @nisseknudsen Allow named volume mounts in regex
- #4320: @josegonzalez Hardcode cnb workdir to /workspace
### New Features
- #4321: @josegonzalez Add git version to output
### Refactors
- #4329: @josegonzalez Standardize apt-get usage
### Documentation
- #4323: @stianlik Fix typo in nginx documentation
### Tests
- #4331: @josegonzalez Switch to upstream bats-core
- #4330: @josegonzalez Switch to using uuidgen for unique app names
### Other
- #4325: @WaviestBalloon Updated bootstrap.sh to not show when $DOKKU_TAG equals nothing
- #4324: @dependabot-preview[bot] chore(deps): bump socket.io from 3.0.5 to 3.1.0 in /tests/apps/.websocket.disabled
- #4319: @josegonzalez Update ruby dependencies in test app
- #4312: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 187 to 188 in /tests/apps/php
# History
## 0.22.8
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.8/bootstrap.sh
sudo DOKKU_TAG=v0.22.8 bash bootstrap.sh
```
### Bug Fixes
- #4309: @josegonzalez Correct issue where verifying an app name would bail early
### Documentation
- #4307: @josegonzalez Specify that the dokku logo is for non-commercial use
# History
## 0.22.6
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.6/bootstrap.sh
sudo DOKKU_TAG=v0.22.6 bash bootstrap.sh
```
### Bug Fixes
- #4295: @josegonzalez Update ps subcommands and triggers
### New Features
- #4286: @josegonzalez Add support for templated CHECKS files
- #4294: @josegonzalez Enhance ssh client logging output
- #4291: @josegonzalez Add log aggregation support via Vector
- #4288: @josegonzalez Add the pid of the dokku process to event logs
- #4289: @josegonzalez Clean precheck tmp file on exit
### Refactors
- #4287: @josegonzalez Refactor parallelized goroutines to use error groups
### Documentation
- #4292: @thomasfedb Update docs to note support for Ubuntu 20.04
- #4293: @ltalirz Fix path in persistent storage docs
### Other
- #4290: @josegonzalez Add support for debug logging plugin trigger stderr and stdout
# History
## 0.22.5
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.5/bootstrap.sh
sudo DOKKU_TAG=v0.22.5 bash bootstrap.sh
```
### Bug Fixes
- #4279: @josegonzalez Allow vmware-based vm to work on big sur
### Refactors
- #4282: @josegonzalez Cleanup brew-bump integration
- #4280: @josegonzalez Parallelize report and scheduler retrieval
### Documentation
- #4285: @josegonzalez Reference official gitlab-ci integration
- #4284: @josegonzalez Drop old doc link to gitlab ci docs
- #4283: @josegonzalez Add CI documentation section for Github Actions and Gitlab
- #4281: @josegonzalez Add forum link to documentation
# History
## 0.22.4
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.4/bootstrap.sh
sudo DOKKU_TAG=v0.22.4 bash bootstrap.sh
```
### Bug Fixes
- #4274: @josegonzalez Use correct warning message for deprecated code
### New Features
- #4273: @josegonzalez Upgrade to golang 1.15
### Refactors
- #4275: @josegonzalez Add calls to verify app name in subcommands
### Documentation
- #4272: @josegonzalez Correct help output for ssh-keys command
### Tests
- #4276: @josegonzalez Upgrade version of plugn used in tests
# History
## 0.22.3
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.3/bootstrap.sh
sudo DOKKU_TAG=v0.22.3 bash bootstrap.sh
```
### Bug Fixes
- #4268: @josegonzalez Properly parse flags for logs command
- #4264: @josegonzalez Correct argument handling when setting the `--app` flag
- #4252: @magikid Allow symbolic links for certificate and key files
### New Features
- #4270: @josegonzalez Allow renaming old applications to new format
- #4261: @josegonzalez Add remove by fingerprint and json format output to ssh-keys plugin
- #4262: @josegonzalez Improve ps:restore logging
- #4263: @josegonzalez Bump the dokku client formula on release
### Documentation
- #4253: @guettli Highlight the default build method used by Dokku
- #4250: @rlnd1 Update upgrading.md
- #4249: @guettli Fix typo in zero downtime docs
- #4247: @josegonzalez Clarify the domain name setting in the docs
### Tests
- #4269: @josegonzalez Rename duplicate test
- #4266: @josegonzalez Update junit test files when a bats retry is successful
- #4265: @josegonzalez Retry failing and skipped tests once
# History
## 0.22.2
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.2/bootstrap.sh
sudo DOKKU_TAG=v0.22.2 bash bootstrap.sh
```
### Bug Fixes
- #4243: @josegonzalez Do not delete app when the app name is invalid
### New Features
- #4141: @josegonzalez Always initialize git repository
### Other
- #4244: @dependabot-preview[bot] chore(deps): bump monolog/monolog from 1.25.5 to 1.26.0 in /tests/apps/php
# History
## 0.22.1
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.1/bootstrap.sh
sudo DOKKU_TAG=v0.22.1 bash bootstrap.sh
```
### Bug Fixes
- #4238: @josegonzalez Ensure dead files are created for docker object retirement
- #4239: @josegonzalez Ensure all byte output is trimmed of whitespace
- #4228: @Cellane Fix tags:deploy command for images that contain ONBUILD directive
- #4233: @josegonzalez Properly parse releease command when there is an entrypoint
- #4215: @josegonzalez Implement missing cleanup routines
- #4212: @josegonzalez Cleanup docker options during post-delete
- #4211: @ml-milan-vit Make the dokku-update command compatible with Dokku 0.22+
### New Features
- #4242: @josegonzalez Remove reference to 'whitelist'
- #4220: @josegonzalez Update plugn from 0.5.0 to 0.5.1
- #4241: @josegonzalez Properly handle stdout when capturing plugn output
- #4237: @josegonzalez Release dokku-update 0.2.0
- #4225: @znz Accept first pushed branch as deploy-branch
### Documentation
- #4236: @josegonzalez Remove note regarding not having an official client
- #4234: @josegonzalez Switch to bats --filter for running a single test
- #4222: @leopolicastro Fix typo in deployment tasks documentation
- #4221: @srr013 Updating readme for clarity on git push step
- #4214: @josegonzalez Expand backup and restore documentation
- #4213: @josegonzalez Enhance the 'plugin' plugin documentation
### Tests
- #4218: @josegonzalez Enable compilation cache
### Other
- #4230: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 186 to 187 in /tests/apps/php
- #4223: @dependabot-preview[bot] chore(deps): bump jetty-servlet from 9.4.35.v20201120 to 11.0.0 in /tests/apps/java
- #4224: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 185 to 186 in /tests/apps/php
# History
## 0.22.0
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.22.0/bootstrap.sh
sudo DOKKU_TAG=v0.22.0 bash bootstrap.sh
```
See the [0.22.0 migration guide](/docs/appendices/0.22.0-migration-guide.md) for more information on migrating to 0.22.0.
### Bug Fixes
- #4204: @josegonzalez Ensure the image is not an empty string
- #4198: @josegonzalez Reference extracted Procfile
- #4194: @josegonzalez Drop appName check in apps:report
- #4183: @josegonzalez Embed pb.UnimplementedGreeterServer to avoid linting issues
- #4182: @josegonzalez Upgrade herokuish to fix nodejs tests
- #4173: @karimsan Add build-essential to Vagrant provision
- #4181: @josegonzalez Conditionally mount the dokku-arch folder if it exists
- #4130: @josegonzalez Clear proxy configs on boot
- #4131: @josegonzalez Bump minimum docker version
- #4123: @fomojola Support for expected CHECKS text with special characters
- #4115: @josegonzalez Add missing labels to built images
- #4116: @Schlepptop Ensure config:clear an be called
### New Features
- #4209: @josegonzalez Add experimental support for Cloud Native Buildpacks (CNB)
- #4210: @josegonzalez Add migration guide link to release notes
- #4203: @josegonzalez Cleanup log output for failure case
- #4208: @ankane Add ability to change the access log format
- #4202: @josegonzalez Schedule related images for cleanup when retiring containers
- #4197: @josegonzalez Retire intermediate containers after use
- #4128: @fomojola Added the container index to the network-compute-ports trigger
- #4191: @josegonzalez Create codeql-analysis.yml
- #4139: @Yihao-G Allow controlling Nginx proxy-buffer-size, proxy-buffering, proxy-buffers, proxy-busy-buffers-size
- #4156: @ltalirz When `cert:add` remove previous cert before copying the new cert
- #4129: @josegonzalez Prohibit non-dns names for apps and process types
- #4125: @josegonzalez Allow customizing the various nginx templates
- #4121: @josegonzalez Add ability to disable custom ninx.conf.sigil extraction
### Refactors
- #4160: @nerg4l Rewrite logs plugin in Go
- #4149: @josegonzalez Rewrite ps plugin in golang
- #4080: @hugopeixoto Stop using VHOST when listing app domains and urls
- #4117: @josegonzalez Rewrite app-json plugin in golang
- #4113: @josegonzalez Drop herokuish release code
### Documentation
- #4196: @josegonzalez Correctly doc apps:report output
- #4195: @luizpicolo Fix whitespace in process-management docs
- #4184: @badsyntax Add note regarding using plugin triggers instead of sourcing functions
- #4188: @fomojola Added the autosync community plugin
- #4187: @nahtnam Add `-p` flag to "Run on External Volume" tutorial
- #4186: @badsyntax Add dokku-discourse to community plugins list
- #4170: @chrisjsimpson Add note on how to enable buildkit usage
- #4168: @josegonzalez Revert "The default branch for ruby-getting-started is 'main', not 'master"
- #4167: @nateww The default branch for ruby-getting-started is 'main', not 'master
- #4135: @znz Fix broken table
- #4140: @swrobel Note Ubuntu 20.04 support in README
- #4136: @hugopeixoto Update push command for sample app in docs
- #4124: @josegonzalez Note that docker options require app rebuilds
- #4098: @carlosgeos Add a note on how nginx handles load balancing
- #4111: @josegonzalez Add large version of dokku image
- #4100: @turicas Fix markdown syntax in nginx docs
### Other
- #4201: @dependabot-preview[bot] chore(deps): bump jetty-servlet from 9.4.34.v20201102 to 9.4.35.v20201120 in /tests/apps/java
- #4200: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 183 to 185 in /tests/apps/php
- #4189: @dependabot-preview[bot] chore(deps): bump thin from 1.7.2 to 1.8.0 in /tests/apps/ruby
- #4175: @dependabot-preview[bot] chore(deps): bump jetty-servlet from 9.4.33.v20201020 to 9.4.34.v20201102 in /tests/apps/java
- #4172: @dependabot-preview[bot] chore(deps): bump github.com/golang/protobuf from 1.4.2 to 1.4.3 in /tests/apps/gogrpc
- #4185: @dependabot-preview[bot] chore(deps): bump socket.io from 2.3.0 to 3.0.1 in /tests/apps/.websocket.disabled
- #4190: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 182 to 183 in /tests/apps/php
- #4165: @dependabot-preview[bot] chore(deps): bump jetty-servlet from 9.4.31.v20200723 to 9.4.33.v20201020 in /tests/apps/java
- #4153: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 181 to 182 in /tests/apps/php
- #4144: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 180 to 181 in /tests/apps/php
- #4137: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 179 to 180 in /tests/apps/php
- #4118: @dependabot[bot] chore(deps): bump django from 3.0.2 to 3.0.7 in /tests/apps/dockerfile-release
- #4103: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 178 to 179 in /tests/apps/php
- #4091: @dependabot-preview[bot] chore(deps): bump jetty-servlet from 9.4.30.v20200611 to 9.4.31.v20200723 in /tests/apps/java
This change adds a new builder - builder-cnb - via the 'DOKKU_CNB_EXPERIMENTAL' environment variable. While support for customizing pack builds is not currently implemented and there may be other missing functionality, this initial implementation allows folks to start playing with CNB.
Future releases of Dokku will provide tighter CNB integration and eventually switch to CNB for default building, as well as allow users to better select builders needed for their applications.
All new code for CNB support should be considered experimental and subject to change as the support evolves over time.
If the containers no longer exist and the images are unused, we should remove the images as well.
Note that images may sometimes stick around for a little while, depending on the retire schedule and the wait time specified for the container.
Closes#4104
Rather than attempting to always extract the Procfile, reference the one that was extracted by the last deploy. This fixes issues where 'docker container cp' may fail intermittently for lord knows what reason.
Closes#4083
Rather than waiting for the next deploy, take advantage of the retire system to retire these containers immediately.
Note that since the retire process happens out of band, the containers may stick around for up to 5 minutes, after which point they will be removed.
Customization of the wait time to retire - currently 60 seconds - is up for future debate. The containers ultimately haven't been useful for debugging, so keeping them around for longer won't help in most cases, and folks can disable the dokku-retire service (or cron) if that is desired.
Better would be to separate the release and deploy aspects into distinct triggers - as well as have it release a specific image - but this is a good first pass.
# History
## 0.21.4
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.21.4/bootstrap.sh
sudo DOKKU_TAG=v0.21.4 bash bootstrap.sh
```
### Bug Fixes
- #4092: @Yihao-G Fix nginx proxy-read-timeout not set for HTTPS
- #4095: @GennadySpb Fix application removal during uninstallation
### New Features
- #4097: @josegonzalez Update herokuish
### Documentation
- #4096: @josegonzalez Clarify that special config variables are not exposed to applications
- #4007: @turicas Clarify nginx.conf.sigil path in image when deploying non-buildpack apps
- #4078: @gurpreetatwal Add more details to `nginx-dokku-template-source` trigger
- #4090: @ankane Official plugins no longer in beta
- #4085: @josegonzalez Set warning on resource type as an actual warning
### Other
- #4082: @dependabot-preview[bot] chore(deps): bump monolog/monolog from 1.25.4 to 1.25.5 in /tests/apps/php
# History
## 0.21.3
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.21.3/bootstrap.sh
sudo DOKKU_TAG=v0.21.3 bash bootstrap.sh
```
### Bug Fixes
- #4077: @Schlepptop Fix config_all bug introduced in 0.21.2
- #4074: @josegonzalez Force set all plugin permissions on plugin:install/update
### Documentation
- #4073: @josegonzalez Document the official shell client
# History
## 0.21.2
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.21.2/bootstrap.sh
sudo DOKKU_TAG=v0.21.2 bash bootstrap.sh
```
### Bug Fixes
- #4072: @Schlepptop Fix deprecation warning in config_all
### New Features
- #4061: @josegonzalez Drop go sum and mod files from releases
### Refactors
- #4064: @hugopeixoto Use *_PATH consistently
### Documentation
- #4069: @josegonzalez Scheduler plugins are no longer beta
- #4068: @josegonzalez Official plugins are no longer in beta
- #4066: @ltalirz Add ansible as installation route
- #4063: @josegonzalez Clarify why we stop/rebuild apps during upgrade
- #4040: @fonsp Added link to the buildpack plugin docs
- #4062: @hugopeixoto Rewrite upgrade instructions
# History
## 0.21.0
Install/update via the bootstrap script:
```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.21.0/bootstrap.sh
sudo DOKKU_TAG=v0.21.0 bash bootstrap.sh
```
### Bug Fixes
- #4058: @hugopeixoto Ensure web installer creates files with correct permissions
- #4055: @hugopeixoto Delete dokkurc recursively during uninstall
- #4057: @hugopeixoto Install sudo when installing from source
- #4045: @josegonzalez Filter gpus instead of nvidia-gpus from resource arguments
- #4029: @josegonzalez Filter args _after_ docker-args-process-deploy
- #4026: @josegonzalez Filter resource args from deploy tasks
- #4022: @josegonzalez Do not allow slashes in app names
- #4020: @josegonzalez Properly handle multiple containers in ps:inspect
- #3989: @josegonzalez Correct entering running containers
- #3977: @josegonzalez Set default port for all run commands
- #3969: @josegonzalez Do not logrotate all services files
- #3964: @josegonzalez Remove all --force-yes usage throughout the codebase
- #3955: @benwh Fix missing 502 error page
- #3953: @josegonzalez Use correct function name for cmd-tar-in and update migration guide
### New Features
- #4041: @rvanlaar feat: Add download option to the certs plugin
- #4043: @josegonzalez Allow controlling nginx proxy-read-timeout
- #4038: @josegonzalez Create proxy:build-config command
- #4021: @josegonzalez Depend on python3 binary for CentOS 8 support
- #4004: @josegonzalez Add support for moby-engine
- #3967: @josegonzalez Add Ubuntu 20.04 support
- #3988: @josegonzalez Upgrade plugn to 0.5.0
- #3987: @josegonzalez Upgrade sigil to 0.6.0
- #3986: @josegonzalez Upgrade sshcommand to 0.11.0
- #3985: @josegonzalez Upgrade go-procfile-util to 0.8.2
- #3982: @josegonzalez Allow apps named tls
- #3979: @josegonzalez Upgrade herokuish
- #3971: @josegonzalez feat: allow users to customize the source of the dokku.conf nginx template
- #3966: @josegonzalez Move domain manipulation into triggers
- #3965: @josegonzalez Drop dokku references in logging output
- #3954: @josegonzalez feat: upgrade herokuish to 0.5.12
- #3940: @josegonzalez Expose last updated time in git:report
- #3939: @josegonzalez Add support for outputting the last visited time
### Refactors
- #4035: @josegonzalez Switch to go mod
- #4008: @josegonzalez Standardize golang command code
### Documentation
- #4056: @swrobel Remove invalid help entry for dokku ps commmand
- #4039: @josegonzalez Break out bc-break and refactors in changelog
- #4025: @alexjj Switch AUR helper to yay
- #4019: @tdak Added one possible solution to an error
- #4014: @rvanlaar Update dreamhost cloudinit script
- #4003: @josegonzalez Add dokku.ai asset
- #3999: @DavidLemayian Update URL for less than 1gb memory in bootstrap.sh [ci skip]
- #3998: @josegonzalez Document the #dokku channel on slack
- #3996: @josegonzalez Clarify network aliases and add section on tld management
- #3980: @josegonzalez Clarify that the web installer is not supported in docker-based installs
- #3970: @josegonzalez Clarify the 'see the docs' internal links
- #3968: @josegonzalez Document access.conf issue
- #3957: @swrobel Add official registry plugin
- #3942: @scowalt Fix grammar in environment variables documentation
### Tests
- #4046: @rvanlaar Make `make test` pass on linting
- #4037: @josegonzalez Try to output oomkill information
- #4036: @josegonzalez Store the deb and rpm artifacts
- #4034: @josegonzalez Teardown apps and containers in global teardown
- #4031: @josegonzalez Delete old apps and ensure the test helper is quieter
- #4030: @josegonzalez Update circleci workflow
- #3947: @jayjun Scope init tests to container processes only
### Other
- #4051: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 177 to 178 in /tests/apps/php
- #4028: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 176 to 177 in /tests/apps/php
- #4016: @dependabot-preview[bot] chore(deps): bump jetty-servlet from 9.4.29.v20200521 to 9.4.30.v20200611 in /tests/apps/java
- #4006: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 174 to 176 in /tests/apps/php
- #4001: @dependabot-preview[bot] chore(deps): bump jetty-servlet from 9.4.28.v20200408 to 9.4.29.v20200521 in /tests/apps/java
- #4002: @dependabot-preview[bot] chore(deps): bump monolog/monolog from 1.25.3 to 1.25.4 in /tests/apps/php
- #3993: @dependabot-preview[bot] chore(deps): bump github.com/golang/protobuf from 1.4.1 to 1.4.2 in /tests/apps/gogrpc
- #3962: @dependabot-preview[bot] chore(deps): bump github.com/golang/protobuf from 1.4.0 to 1.4.1 in /tests/apps/gogrpc
- #3959: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 173 to 174 in /tests/apps/php
- #3950: @dependabot-preview[bot] chore(deps): bump google.golang.org/grpc from 1.29.0 to 1.29.1 in /tests/apps/gogrpc
- #3946: @dependabot-preview[bot] chore(deps): bump google.golang.org/grpc from 1.28.1 to 1.29.0 in /tests/apps/gogrpc
