feat: ensure Ubuntu Noble is properly supported by the Dokku release process

Also update doc references to use 24.04 in examples where possible.

README.md

@@ -74,7 +74,7 @@ Support us with a monthly donation and help us continue our activities. [[Become
 
 A fresh VM running any of the following operating systems:
 
-- Ubuntu 20.04 / 22.04 x64 - Any currently supported release
+- Ubuntu 20.04 / 22.04 / 24.04 x64 - Any currently supported release
 - Debian 10+ x64
 - Arch Linux x64 *(experimental)*
 

bootstrap.sh

@@ -3,7 +3,7 @@ set -eo pipefail
 [[ $TRACE ]] && set -x
 
 # A script to bootstrap dokku.
-# It expects to be run on Ubuntu 20.04/22.04 via 'sudo`
+# It expects to be run on Ubuntu 20.04/22.04/24.04 via 'sudo`
 # If installing a tag higher than 0.3.13, it may install dokku via a package (so long as the package is higher than 0.3.13)
 # It checks out the dokku source code from GitHub into ~/dokku and then runs 'make install' from dokku source.
 
@@ -12,7 +12,7 @@ set -eo pipefail
 # That's good because it prevents our output overlapping with wget's.
 # It also means that we can't run a partially downloaded script.
 
-SUPPORTED_VERSIONS="Debian [10, 11, 12], Ubuntu [18.04, 20.04, 22.04, 24.04]"
+SUPPORTED_VERSIONS="Debian [10, 11, 12], Ubuntu [20.04, 22.04, 24.04]"
 
 log-fail() {
   declare desc="log fail formatter"
@@ -160,7 +160,7 @@ install-dokku-from-deb-package() {
   local NO_INSTALL_RECOMMENDS=${DOKKU_NO_INSTALL_RECOMMENDS:=""}
   local OS_ID
 
-  if ! in-array "$DOKKU_DISTRO_VERSION" "18.04" "20.04" "22.04" "24.04" "10" "11" "12"; then
+  if ! in-array "$DOKKU_DISTRO_VERSION" "20.04" "22.04" "24.04" "10" "11" "12"; then
     log-fail "Unsupported Linux distribution. Only the following versions are supported: $SUPPORTED_VERSIONS"
   fi
 
@@ -181,16 +181,16 @@ install-dokku-from-deb-package() {
     wget -nv -O - https://get.docker.com/ | sh
   fi
 
-  OS_ID="$(lsb_release -cs 2>/dev/null || echo "jammy")"
+  OS_ID="$(lsb_release -cs 2>/dev/null || echo "noble")"
   if ! in-array "$DOKKU_DISTRO" "debian" "ubuntu" "raspbian"; then
     DOKKU_DISTRO="ubuntu"
-    OS_ID="jammy"
+    OS_ID="noble"
   fi
 
   if [[ "$DOKKU_DISTRO" == "ubuntu" ]]; then
-    OS_IDS=("focal" "jammy")
+    OS_IDS=("focal" "jammy" "noble")
     if ! in-array "$OS_ID" "${OS_IDS[@]}"; then
-      OS_ID="jammy"
+      OS_ID="noble"
     fi
   elif [[ "$DOKKU_DISTRO" == "debian" ]]; then
     OS_IDS=("stretch" "buster" "bullseye" "bookworm")

contrib/copy-packages

@@ -15,7 +15,7 @@ def download_file(filename, url):
 
 
 def upload_file(filename):
-    versions = ["jammy"]
+    versions = ["noble"]
     cmd_template = "package_cloud push dokku/dokku/ubuntu/{0} {1}"
     for version in versions:
         cmd = cmd_template.format(version, filename)
@@ -25,7 +25,7 @@ def upload_file(filename):
 def main():
     auth = HTTPBasicAuth(PACKAGECLOUD_TOKEN, "")
     base = requests.get(
-        "https://packagecloud.io/api/v1/repos/dokku/dokku/packages/deb/ubuntu/focal.json",
+        "https://packagecloud.io/api/v1/repos/dokku/dokku/packages/deb/ubuntu/jammy.json",
         auth=auth,
     )
     data = base.json()

contrib/release-dokku

@@ -144,7 +144,7 @@ fn-publish-package() {
       fi
     done
   elif [[ "$DIST" == "ubuntu" ]]; then
-    OS_IDS=("focal" "jammy")
+    OS_IDS=("focal" "jammy" "noble")
     for OS_ID in "${OS_IDS[@]}"; do
       log-info "(release-dokku) pushing ${RELEASE_TYPE} to packagecloud.com/${REPOSITORY}/${DIST}"
       package_cloud push "${REPOSITORY}/${DIST}/${OS_ID}" "$PACKAGE_NAME"

deb.mk

@@ -16,7 +16,7 @@ install-from-deb:
 
 	@echo "--> Installing dokku"
 	wget -qO- https://packagecloud.io/dokku/dokku/gpgkey | sudo tee /etc/apt/trusted.gpg.d/dokku.asc
-	@echo "deb https://packagecloud.io/dokku/dokku/ubuntu/ $(shell lsb_release -cs 2>/dev/null || echo "focal") main" | sudo tee /etc/apt/sources.list.d/dokku.list
+	@echo "deb https://packagecloud.io/dokku/dokku/ubuntu/ $(shell lsb_release -cs 2>/dev/null || echo "noble") main" | sudo tee /etc/apt/sources.list.d/dokku.list
 	sudo apt-get update -qq >/dev/null
 	sudo DEBIAN_FRONTEND=noninteractive DEBCONF_NONINTERACTIVE_SEEN=true apt-get -qq -y --no-install-recommends install dokku
 

docs/deployment/builders/dockerfiles.md

@@ -130,7 +130,7 @@ dokku docker-options:add node-js-app build '--build-arg NODE_ENV'
 Once set, the Dockerfile usage would be as follows:
 
 ```Dockerfile
-FROM ubuntu:20.04
+FROM ubuntu:24.04
 
 # set the argument default
 ARG NODE_ENV=production
@@ -142,7 +142,7 @@ RUN echo $NODE_ENV
 You may also set the argument as an environment variable
 
 ```Dockerfile
-FROM ubuntu:20.04
+FROM ubuntu:24.04
 
 # set the argument default
 ARG NODE_ENV=production

docs/deployment/continuous-integration/github-actions.md

@@ -13,7 +13,7 @@ on:
 
 jobs:
   deploy:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Cloning repo
         uses: actions/checkout@v3

docs/development/testing.md

@@ -9,11 +9,11 @@ We maintain the Dokku test harness within the `tests` directory:
 
 ## Continuous Integration
 
-All pull requests have tests run against them on [GitHub Actions](https://github.com/features/actions), a continuous integration platform that provides Docker support for Ubuntu Focal 20.04.
+All pull requests have tests run against them on [GitHub Actions](https://github.com/features/actions), a continuous integration platform that provides Docker support for Ubuntu Jammy 22.04.
 
 If you wish to skip tests for a particular commit, e.g. documentation changes, you may add the `[ci skip]` designator to your commit message. Commits that _should_ be tested but have the above designator will not be merged.
 
-While we do provide official packages for a variety of platforms, as our test suite currently runs on Ubuntu Focal 20.04, we only provide official installation support for that platform and the latest LTS release of Ubuntu (currently 20.04).
+While we do provide official packages for a variety of platforms, as our test suite currently runs on Ubuntu Jammy 22.04, we only provide official installation support for that platform and the supported LTS releases of Ubuntu (currently 20.04, 22.04, and 24.04).
 
 ## Local Test Execution
 

docs/getting-started/install/digitalocean.md

@@ -6,7 +6,7 @@
 
 1. Login to your [DigitalOcean](https://m.do.co/c/fe06b043a083) account.
 2. Click **Create a Droplet**.
-3. Under **Choose an image > Marketplace**, search latest **Dokku** release for Ubuntu 20.04 _(version numbers may vary)_.
+3. Under **Choose an image > Marketplace**, search latest **Dokku** release for Ubuntu 24.04 _(version numbers may vary)_.
 4. Under **Choose a size**, select your machine spec.
 5. Under **Choose a datacenter region**, select your region.
 6. Add an SSH Key.

docs/getting-started/install/dreamhost.md

@@ -19,7 +19,7 @@ source openrc.sh # Set the environment variables for DreamHost Cloud
 
 This allows OpenStack client to connect to DreamHost API endpoints.
 The command below creates a new server instance named `my-dokku-instance`
-based on Ubuntu 20.04, with 2 GB RAM and 1 CPU (the flavor called
+based on Ubuntu 24.04, with 2 GB RAM and 1 CPU (the flavor called
 `supersonic`), opening network port access to HTTP and SSH (the
 `default` security group), and the name of the chosen SSH key. This
 key will be automatically added to the new server in the
@@ -28,7 +28,7 @@ be reused by Dokku.
 
 ```sh
 openstack server create \
-  --image Ubuntu-20.04 \
+  --image Ubuntu-24.04 \
   --flavor gp1.supersonic \
   --security-group default \
   --key-name $YOUR_SSH_KEYNAME \

docs/getting-started/installation/index.md

@@ -9,7 +9,7 @@ Dokku is an extensible, open source Platform as a Service that runs on a single
 To start using Dokku, you'll need a system that meets the following minimum requirements:
 
 - A fresh installation of any of the following operating systems:
-    - [Ubuntu 20.04/22.04](https://www.ubuntu.com/download)
+    - [Ubuntu 20.04/22.04/24.04](https://www.ubuntu.com/download)
     - [Debian 10+ x64](https://www.debian.org/distrib/)
 - A server with one of the following architectures
     - AMD64 (alternatively known as `x86_64`), commonly used for Intel cloud servers

docs/networking/port-management.md

@@ -161,7 +161,7 @@ Dokku will extract all tcp ports exposed using the `EXPOSE` directive (one port
 For example, if the Dokku installation is configured with the domain `dokku.me` and an application named `node-js-app` is deployed with following Dockerfile:
 
 ```
-FROM ubuntu:20.04
+FROM ubuntu:24.04
 EXPOSE 1234
 CMD python -m SimpleHTTPServer 1234
 ```