Add heroku deploy workflow

.github/workflows/ci-docker-heroku-deploy.yml

@@ -0,0 +1,31 @@
+name: Deploy Docker Image to Heroku
+
+on: 
+  workflow-dispatch:
+    inputs:
+      appName:
+        description: 'Heroku App Name'
+        required: true
+        type: string
+      imageName:
+        description: 'Image Name'
+        required: true
+        type: string
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Login
+      env: 
+        HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
+      run: heroku container:login
+      - name: Push
+        env:
+          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
+        run: heroku container:push ${{ inputs.imageName }} -a ${{ inputs.appName }} --recursive 
+      - name: Release
+        env:
+          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
+        run: heroku container:release ${{ inputs.imageName }} -a ${{ inputs.appName }}

.github/workflows/ci-docker-publish.yml

@@ -1,4 +1,4 @@
-name: Publish to Docker
+name: Publish Docker Image to GCR
 
 on:
   push:
@@ -15,7 +15,7 @@ env:
   IMAGE: mango-v4
 
 jobs:
-  build:
+  deploy:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout