From 4a3707d36defbf72009d9a4a8ea7cc56963a365c Mon Sep 17 00:00:00 2001
From: Jose Diaz-Gonzalez <email@josediazgonzalez.com>
Date: Fri, 28 Dec 2018 19:17:26 -0500
Subject: [PATCH] feat: tag the "latest" image on tags deploy

If the image tag being deployed is not `latest`, we'll retag it as such once the deploy is complete.

Closes #3355
---
 docs/deployment/methods/images.md | 2 +-
 plugins/tags/subcommands/deploy   | 8 +++++++-
 tests/unit/40_tags.bats           | 4 ++++
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/docs/deployment/methods/images.md b/docs/deployment/methods/images.md
index 015dd22dd..a153e4977 100644
--- a/docs/deployment/methods/images.md
+++ b/docs/deployment/methods/images.md
@@ -65,7 +65,7 @@ dokku/node-js-app   v1                  936a42f25901        About a minute ago
 
 ### Deploying an image tag
 
-Finally, you can also deploy a local image using the `tags:deploy` command.
+Finally, you can also deploy a local image using the `tags:deploy` command. When specifying a tag that is not `latest`, the released image will be retagged as the `latest` image tag for the app.
 
 ```shell
 dokku tags:deploy node-js-app v1
diff --git a/plugins/tags/subcommands/deploy b/plugins/tags/subcommands/deploy
index f924bea67..2b4fd16f0 100755
--- a/plugins/tags/subcommands/deploy
+++ b/plugins/tags/subcommands/deploy
@@ -12,7 +12,13 @@ tags_deploy_cmd() {
 
   IMAGE="$(get_app_image_name "$APP" "$IMAGE_TAG")"
   verify_image "$IMAGE" || return 1
-  release_and_deploy "$APP" "$IMAGE_TAG"  
+  release_and_deploy "$APP" "$IMAGE_TAG"
+
+  if [[  "$IMAGE_TAG" != "latest" ]]; then
+    local DOKKU_SCHEDULER="$(get_app_scheduler "$APP")"
+    local LATEST_IMAGE="$(get_app_image_name "$APP")"
+    plugn trigger scheduler-tags-create "$DOKKU_SCHEDULER" "$APP" "$IMAGE" "$LATEST_IMAGE"
+  fi
 }
 
 tags_deploy_cmd "$@"
diff --git a/tests/unit/40_tags.bats b/tests/unit/40_tags.bats
index 3ad1e65ff..c5c5c89ea 100644
--- a/tests/unit/40_tags.bats
+++ b/tests/unit/40_tags.bats
@@ -45,6 +45,10 @@ teardown() {
   echo "output: $output"
   echo "status: $status"
   assert_success
+  run /bin/bash -c "docker images | egrep "dokku/${TEST_APP}"| egrep -q latest"
+  echo "output: $output"
+  echo "status: $status"
+  assert_success
 }
 
 @test "(tags) tags:deploy (missing tag)" {