From 1b4caf4699147ec26c99387ff775580d7bcb0cae Mon Sep 17 00:00:00 2001
From: Florian Piesche <florian@yellowkeycard.net>
Date: Wed, 1 Jun 2022 22:55:56 +0100
Subject: [PATCH 1/2] Automatically run docker release on releases

With this change, publishing a new release using the github web UI will automatically trigger the `docker-release.yml` workflow and build and push the image, publishing it under the `latest` tag as well as the repository tag name for the release. No more manually kicking off the release workflow!

I've also added publishing the image to ghcr.io because with Docker Hub pushing harder on subscriptions it might be nice to have a backup in place.
---
 .github/workflows/docker-release.yml | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/docker-release.yml b/.github/workflows/docker-release.yml
index 3063a97..d5f0207 100644
--- a/.github/workflows/docker-release.yml
+++ b/.github/workflows/docker-release.yml
@@ -6,19 +6,25 @@ on:
       tags:
         description: 'Docker tags'
         required: true
+  release:
+    types: [published]
 
 jobs:
   build-and-push:
     runs-on: ubuntu-latest
+
     steps:
       - name: checkout code
         uses: actions/checkout@v2
+
       - name: Set hash
         id: vars
         run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"
+
       - name: Get current date
         id: date
         run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
+
       - name: create-json
         id: create-json
         uses: jsdaniell/create-json@1.1.2
@@ -26,15 +32,31 @@ jobs:
           name: "version.json"
           json: '{"type": "docker", "tag": "latest", "commit": "${{ steps.vars.outputs.sha_short }}", "date": "${{ steps.date.outputs.date }}"}'
           dir: 'backend/'
+
+      - name: Set image tag
+        id: tags
+        run: |
+          if [ ${{ github.event.action }} == "workflow_dispatch" ]; then
+            echo "::set-output name=tags::${{ github.event.inputs.tags }}"
+          elif [ ${{ github.event.action }} == "release" ]; then
+            echo "::set-output name=tags::${{ github.event.release.tag_name }}"
+          else
+            echo "Unknown workflow trigger: ${{ github.event.action }}! Cannot determine tags."
+            exit 1
+          fi
+
       - name: setup platform emulator
         uses: docker/setup-qemu-action@v1
+
       - name: setup multi-arch docker build
         uses: docker/setup-buildx-action@v1
+
       - name: Login to DockerHub
         uses: docker/login-action@v1
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
+
       - name: build & push images
         uses: docker/build-push-action@v2
         with:
@@ -42,4 +64,8 @@ jobs:
           file: ./Dockerfile
           platforms: linux/amd64,linux/arm,linux/arm64/v8
           push: true
-          tags: ${{ github.event.inputs.tags }}
+          tags: |
+            ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKERHUB_REPO }}:latest
+            ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKERHUB_REPO }}:${{ steps.tags.outputs.tags }}
+            ghcr.io/${{ github.repository_owner }}/${{ secrets.DOCKERHUB_REPO }}:latest
+            ghcr.io/${{ github.repository_owner }}/${{ secrets.DOCKERHUB_REPO }}:${{ steps.tags.outputs.tags }}

From 12dd9d45b54a1129344828afec478f1dad0e689d Mon Sep 17 00:00:00 2001
From: Florian Piesche <florian@yellowkeycard.net>
Date: Wed, 1 Jun 2022 23:40:58 +0100
Subject: [PATCH 2/2] Use docker/metadata-action

This simplifies specifying tags and will also generate metadata labels for the image as per [OpenContainers spec](https://github.com/opencontainers/image-spec/blob/main/annotations.md)
---
 .github/workflows/docker-release.yml | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/docker-release.yml b/.github/workflows/docker-release.yml
index d5f0207..ff0e8d8 100644
--- a/.github/workflows/docker-release.yml
+++ b/.github/workflows/docker-release.yml
@@ -41,10 +41,21 @@ jobs:
           elif [ ${{ github.event.action }} == "release" ]; then
             echo "::set-output name=tags::${{ github.event.release.tag_name }}"
           else
-            echo "Unknown workflow trigger: ${{ github.event.action }}! Cannot determine tags."
+            echo "Unknown workflow trigger: ${{ github.event.action }}! Cannot determine default tag."
             exit 1
           fi
 
+      - name: Generate Docker image metadata
+        id: docker-meta
+        uses: docker/metadata-action@v4
+        with:
+          images: |
+            ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKERHUB_REPO }}
+            ghcr.io/${{ github.repository_owner }}/${{ secrets.DOCKERHUB_REPO }}
+          tags: |
+            raw=${{ steps.tags.outputs.tags }}
+            raw=latest
+
       - name: setup platform emulator
         uses: docker/setup-qemu-action@v1
 
@@ -64,8 +75,5 @@ jobs:
           file: ./Dockerfile
           platforms: linux/amd64,linux/arm,linux/arm64/v8
           push: true
-          tags: |
-            ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKERHUB_REPO }}:latest
-            ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKERHUB_REPO }}:${{ steps.tags.outputs.tags }}
-            ghcr.io/${{ github.repository_owner }}/${{ secrets.DOCKERHUB_REPO }}:latest
-            ghcr.io/${{ github.repository_owner }}/${{ secrets.DOCKERHUB_REPO }}:${{ steps.tags.outputs.tags }}
+          tags: ${{ steps.docker-meta.outputs.tags }}
+          labels: ${{ steps.docker-meta.outputs.labels }}