Updating docker workflows

* Allowing docker builds on branches -> useful for testing
* Adding delete docker image workflow for when a branch not main is deleted

.github/workflows/docker-branch-delete.yml

@@ -0,0 +1,31 @@
+name: Delete branch docker
+# Deletes the docker associated with the branch
+
+on:
+  delete:
+    branches:
+      - '!main'
+
+jobs:
+  delete:
+    if: github.event.ref_type == 'branch'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Clean up
+        run: echo "Clean up for branch ${{ github.event.ref }}"
+      - name: Prepare
+        id: prep
+        run: |
+          DOCKER_IMAGE=provenanceio/explorer-service
+          VERSION=$(echo ${github.event.ref} | sed -r 's#/+#-#g')
+          echo ::set-output name=version::${VERSION}
+      - name: Delete branch docker
+        uses: m3ntorship/[email protected]
+        id: delete_old_tags
+        with:
+          token: ${{secrets.DOCKERHUB_TOKEN}}
+          keep-last: 50
+          user: ${{ secrets.DOCKERHUB_USERNAME }}
+          repos: '["provenanceio/explorer-service"]'
+          substrings: '[${{ steps.prep.outputs.version }}]'

.github/workflows/docker.yml

@@ -1,11 +1,12 @@
-name: Build
+name: Docker
 
 on:
   push:
-    branches: [ main ]
+    branches:
+      - '**'
 
 jobs:
-  build:
+  docker:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
@@ -23,6 +24,27 @@ jobs:
       run: chmod +x gradlew
     - name: Build with Gradle
       run: ./gradlew build
+    - name: Prepare
+      id: prep
+      run: |
+        DOCKER_IMAGE=provenanceio/explorer-service
+        VERSION=noop
+        if [[ $GITHUB_REF == refs/tags/* ]]; then
+          VERSION=${GITHUB_REF#refs/tags/}
+        elif [[ $GITHUB_REF == refs/heads/* ]]; then
+          VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
+          echo ::set-output name=branch::${VERSION}
+          if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
+            VERSION=latest
+          fi
+        fi
+        TAGS="${DOCKER_IMAGE}:${VERSION}"
+        if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+          TAGS="$TAGS,${DOCKER_IMAGE}:${VERSION}"
+        fi
+        echo ::set-output name=version::${VERSION}
+        echo ::set-output name=tags::${TAGS}
+        echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v1
     - name: Login to DockerHub
@@ -36,9 +58,10 @@ jobs:
         file: docker/Dockerfile-service
         context: .
         push: true
-        tags: provenanceio/explorer-service:latest
+        tags: ${{ steps.prep.outputs.tags }}
     - name: Build and push database docker
       uses: docker/build-push-action@v2
+      if: ${{ steps.prep.outputs.branch == github.event.repository.default_branch }}
       with:
         file: docker/Dockerfile-database
         context: .