add gh action to create docker image with a specified branch. Branch …

…name will be used as image's tag name. (ton-blockchain#1133)

Co-authored-by: neodiX <[email protected]>

.github/workflows/docker-ubuntu-branch-image.yml

@@ -0,0 +1,48 @@
+name: Docker Ubuntu 22.04 branch image
+
+on:
+  workflow_dispatch:
+  push:
+    branches-ignore:
+      - master
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v3
+        with:
+          submodules: 'recursive'
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Get tag as branch name
+        id: tag
+        run: |
+          echo "TAG=${GITHUB_REF##*/}" >> $GITHUB_OUTPUT
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/amd64
+          push: true
+          context: ./
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.TAG }}