Fix publishing docker containers on push (tagged with sha for all pushes, master is tagged with sha, master, latest)

.github/workflows/publish.yaml

@@ -30,19 +30,28 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-      - name: Inject slug/short variables
-        uses: rlespinasse/github-slug-action@v2.x
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
       - name: Set variables
+        id: prep
         run: |
-          echo "REPOSITORY=$(echo $GITHUB_REPOSITORY | tr '[A-Z]' '[a-z]')" >> $GITHUB_ENV
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v2.5.0
+          DOCKER_IMAGE=server
+          REPOSITORY="$(echo $GITHUB_REPOSITORY | tr '[:upper:]' '[:lower:]')"
+
+          TAGS="ghcr.io/${REPOSITORY}/${DOCKER_IMAGE}:${GITHUB_SHA}"
+          if [ "${{ github.ref }}" = "refs/heads/master" ]; then
+            TAGS="$TAGS,ghcr.io/${REPOSITORY}/${DOCKER_IMAGE}:latest,ghcr.io/${REPOSITORY}/${DOCKER_IMAGE}:master"
+          fi
+
+          echo ::set-output name=tags::${TAGS}
+      - name: Log in to GitHub Docker Registry
+        uses: docker/login-action@v1
         with:
+          registry: ghcr.io
           username: ${{ github.actor }}
-          password: ${{ github.token }}
-          registry: docker.pkg.github.com
-          repository: ${{ env.REPOSITORY }}/server
-          tag_with_sha: true
-          tag_with_ref: true
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build container image
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: ${{ steps.prep.outputs.tags }}