Adds automation for deploying acceptance and production (#123)

* Adds automation for deploying acceptance and production

* Adds README docs

* Removes restart requirement

.github/workflows/deploy_acceptance.yaml

@@ -0,0 +1,12 @@
+name: Deploy Acceptance
+
+on:
+  workflow_dispatch: {}
+
+jobs:
+  deploy_acceptance:
+    uses: ./.github/workflows/deploy_template.yaml
+    with:
+      target_branch: 'acceptance'
+      source_branch: 'main'
+    secrets: inherit

.github/workflows/deploy_production.yaml

@@ -0,0 +1,12 @@
+name: Deploy Production
+
+on:
+  workflow_dispatch: {}
+
+jobs:
+  deploy_acceptance:
+    uses: ./.github/workflows/deploy_template.yaml
+    with:
+      target_branch: 'production'
+      source_branch: 'acceptance'
+    secrets: inherit

.github/workflows/deploy_template.yaml

@@ -0,0 +1,36 @@
+name: Deploy Template
+
+on:
+  workflow_call:
+    inputs:
+      source_branch:
+        type: string
+        required: true
+        description: Source Branch
+      target_branch:
+        type: string
+        required: true
+        description: Target Branch
+jobs:
+  deploy:
+    name: Deploy ${{ inputs.target_branch }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/create-github-app-token@v1
+        name: Generate GitHub Token
+        id: app-token
+        with:
+          app-id: ${{ secrets.LUNATECH_BLOG_APP_ID }}
+          private-key: ${{ secrets.LUNATECH_BLOG_APP_PRIVATE_KEY }}
+
+      - uses: actions/checkout@v4
+        with:
+          token: ${{ steps.app-token.outputs.token }}
+          fetch-depth: '0'
+
+      - name: Merge from ${{ inputs.source_branch }} to ${{ inputs.target_branch }}
+        run: |
+          git fetch origin
+          git checkout ${{ inputs.target_branch }}
+          git rebase origin/${{ inputs.source_branch }}
+          git push origin ${{ inputs.target_branch }}

README.md

@@ -24,3 +24,14 @@ You can modify the template in the `app/views/` directory.
 ## Starting the application 
 
 `sbt run` and go in your browser to `http:localhost:9000`
+
+# How to deploy a new version
+
+Merging your PR will update the `main` branch only. You'll need to deploy it first in 
+[Acceptance](https://blog.acceptance.lunatech.com/), and then in [Production](https://blog.lunatech.com/).
+
+You can do both with the help of GitHub Actions:
+* [Deploy Acceptance](https://github.com/lunatech-labs/lunatech-blog-engine/actions/workflows/deploy_acceptance.yaml)
+* [Deploy Production](https://github.com/lunatech-labs/lunatech-blog-engine/actions/workflows/deploy_production.yaml)
+
+