Upload the images to Docker Hub

Each image is huge but can be uploaded to Docker Hub.
This makes it easy for users to get started with DevStack.

2.27GB https://hub.docker.com/repository/docker/bobuhiro11/containerized-devstack-controller
1.41GB https://hub.docker.com/repository/docker/bobuhiro11/containerized-devstack-compute-1
1.41GB https://hub.docker.com/repository/docker/bobuhiro11/containerized-devstack-compute-2

Signed-off-by: Nobuhiro MIKI <nob@bobuhiro11.net>

Author: bobuhiro11

.github/workflows/action.yaml

@@ -36,3 +36,28 @@ jobs:
             "source devstack/openrc admin admin; exec nova list"
           docker-compose exec -T --user stack controller /bin/bash -c \
             "source devstack/openrc admin admin; exec nova list" | grep ACTIVE
+          docker-compose stop
+          docker ps -a
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      - name: Push to Docker Hub
+        if: github.event_name != 'schedule'
+        run: |
+          docker commit controller bobuhiro11/containerized-devstack-controller:${{ github.sha }}
+          docker commit compute-1 bobuhiro11/containerized-devstack-compute-1:${{ github.sha }}
+          docker commit compute-2 bobuhiro11/containerized-devstack-compute-2:${{ github.sha }}
+          docker push bobuhiro11/containerized-devstack-controller:${{ github.sha }}
+          docker push bobuhiro11/containerized-devstack-compute-1:${{ github.sha }}
+          docker push bobuhiro11/containerized-devstack-compute-2:${{ github.sha }}
+      - name: Push to Docker Hub for latest
+        if: github.ref == 'refs/heads/main' && github.event_name != 'schedule'
+        run: |
+          docker commit controller bobuhiro11/containerized-devstack-controller:latest
+          docker commit compute-1 bobuhiro11/containerized-devstack-compute-1:latest
+          docker commit compute-2 bobuhiro11/containerized-devstack-compute-2:latest
+          docker push bobuhiro11/containerized-devstack-controller:latest
+          docker push bobuhiro11/containerized-devstack-compute-1:latest
+          docker push bobuhiro11/containerized-devstack-compute-2:latest