ADD GitAction to publish docker in Dockerhub for branches

.github/workflows/publishimage-master.yml

@@ -0,0 +1,35 @@
+name: Publish Docker image (master)
+
+# The workflow will push images on every tag in the format x.y.z
+# FIXME PR: change label and branch before merging into master
+
+on:
+  push:
+    branches:
+      #- master
+      - feature/4004_jexl_expressions
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Log in to Docker Hub
+      uses: docker/login-action@v2
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+
+    - name: Build Docker image
+      #run: docker build -t telefonicaiot/fiware-orion:latest --build-arg GIT_REV_ORION=master --build-arg REPO_ACCESS_TOKEN=${{ secrets.REPO_ACCESS_TOKEN }} --no-cache -f docker/Dockerfile .
+      run: docker build -t telefonicaiot/fiware-orion:jexl --build-arg GIT_REV_ORION=feature/4004_jexl_expressions --build-arg REPO_ACCESS_TOKEN=${{ secrets.REPO_ACCESS_TOKEN }} --no-cache -f docker/Dockerfile .
+
+    - name: Push Docker image
+      #run: docker push telefonicaiot/fiware-orion:latest
+      run: docker push telefonicaiot/fiware-orion:jexl