add a docker hub action

.github/workflows/publish-to-dockerhub.yml

@@ -0,0 +1,35 @@
+name: Publish image to Dockerhub
+
+on:
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+    inputs:
+      branch_name:
+        description: Branch to build from
+        default: master
+        required: true
+jobs:
+  push:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        if: github.event_name == 'workflow_dispatch'
+        with:
+          ref: '${{ github.event.inputs.branch_name }}'
+      - uses: actions/checkout@v4
+        if: github.event_name == 'push'
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      - name: Push image
+        env:
+          DOCKERHUB_ACCOUNT: ${{ secrets.DOCKERHUB_ACCOUNT }}
+          DOCKERHUB_REPO: ${{ secrets.DOCKERHUB_REPO }}
+        run: |
+          export VERSION=`git rev-parse --short=7 HEAD`
+          echo "Publishing a Docker image with a tag $VERSION"
+          docker-compose build && docker-compose push && unset VERSION