chore(ci): use docker buildx action

* chore(ci): adds docker buildx action

* chore(ci): fixes

.github/workflows/publish-docker-images.yml

@@ -11,20 +11,29 @@ jobs:
     steps:
       - name: Check out the repo
         uses: actions/checkout@v2
-      - name: Push to Docker Hub
-        uses: docker/build-push-action@v1
+      - name: Set up Docker Buildx
+        uses: crazy-max/ghaction-docker-buildx@v3
+      - name: Prepare
+        id: prepare
+        run: |
+          DOCKER_IMAGE=garethflowers/ftp-server
+          DOCKER_PLATFORMS=linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/386,linux/ppc64le,linux/s390x
+          VERSION=latest
+
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/v}
+          fi
+
+          TAGS="--tag ${DOCKER_IMAGE}:${VERSION}"
+          if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+            TAGS="$TAGS --tag ${DOCKER_IMAGE}:latest"
+          fi
+
+          echo ::set-output name=buildx_args::${TAGS} --platform ${DOCKER_PLATFORMS} .
+      - name: Login to Docker Hub
+        uses: docker/login-action@v1
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
-          repository: garethflowers/ftp-server
-          add_git_labels: true
-          tag_with_ref: true
-      - name: Push to GitHub Packages
-        uses: docker/build-push-action@v1
-        with:
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-          registry: docker.pkg.github.com
-          repository: ${{ github.repository }}/ftp-server
-          add_git_labels: true
-          tag_with_ref: true
+      - name: Push to Docker Hub
+        run: docker buildx build --output "type=image,push=true" ${{ steps.prepare.outputs.buildx_args }}