Add GHA workflow to push docker images to registry

.github/workflows/push-images.yml

@@ -0,0 +1,30 @@
+name: "Push images to Docker Hub"
+# on: workflow_dispatch
+on:
+  pull_request:
+  push:
+    branches:
+      - "dev/push-images-to-registry"
+jobs:
+  build:
+    name: "Builds images and push them to Docker Hub"
+    runs-on: "ubuntu-22.04"
+    steps:
+      - name: "Check out repository"
+        uses: "actions/checkout@v4"
+      - name: "Set up buildx"
+        uses: "docker/setup-buildx-action@v3"
+      - name: "Login to Docker Hub"
+        uses: docker/login-action@v3
+        with:
+          username: artefactual
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      - name: "Build and Push Storage Service"
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          load: true
+          file: ./Dockerfile
+          target: "archivematica-storage-service"
+          tags: artefactual/archivematica-storage-service:latest