Create a Docker image on DockerHub on release to stable

.github/workflows/dockerhub-imagepush.yml

@@ -0,0 +1,24 @@
+name: Push Docker Image on Release
+
+on:
+  push:
+    branches: [ "stable" ]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Log in to Docker hub
+      env:
+        DOCKER_USER: ${{secrets.DOCKER_USER}}
+        DOCKER_PASSWORD: ${{secrets.DOCKER_PASSWORD}}
+      run: |
+        docker login -u $DOCKER_USER -p $DOCKER_PASSWORD
+    - name: Build the Docker image
+      run: docker build . --file Dockerfile --tag ${{secrets.DOCKER_USER}}/auto-gpt:$(git describe --tags `git rev-list --tags --max-count=1`)
+    - name: Docker Push
+      run: docker push ${{secrets.DOCKER_USER}}/auto-gpt