push to docker registry

.github/workflows/docker-image.yml

@@ -2,17 +2,34 @@ name: Docker Image CI
 
 on:
   push:
-    branches: [ master ]
+    branches: [master]
   pull_request:
-    branches: [ master ]
+    branches: [master]
 
 jobs:
-
   build:
-
     runs-on: ubuntu-latest
-
     steps:
-    - uses: actions/checkout@v2
-    - name: Build the Docker image
-      run: docker build . --file Dockerfile.buster --tag opencv-docker-golang:$(date +%s) --tag opencv-docker-golang:buster
+      - uses: actions/checkout@v2
+      - name: Build the Docker image with golang:buster
+        run: docker build . --file Dockerfile.buster --tag opencv-docker-golang:buster
+
+      - name: Build the Docker image with ubuntu:20.04
+        run: docker build . --file Dockerfile.ubuntu --tag opencv-docker-golang:ubuntu
+
+      - name: Build the Docker image with dlib
+        run: docker build . --file Dockerfile.dlib --tag opencv-docker-golang:dlib
+  push_to_registries:
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+    steps:
+      - name: Push Docker image to multiple registries
+        uses: actions/checkout@v2
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@f054a8b539a109f9f41c372932f1ae047eff08c9
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}