add nightly build

.github/workflows/common-docker-build.yml

@@ -1,13 +1,6 @@
-name: Build and Push Docker images
-
-on:
-  push:
-    branches:
-      - master
-    paths:
-      - 'version.txt'
-  workflow_dispatch:
+name: Common Docker Build
 
+on: [push]
 
 jobs:
   build-and-push:
@@ -15,10 +8,6 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Read Version
-      id: version
-      run: echo "::set-output name=VERSION::$(cat version.txt)"
-
     - name: Set up QEMU
       uses: docker/setup-qemu-action@v1
 
@@ -37,15 +26,12 @@ jobs:
         context: .
         file: ./Dockerfile
         push: true
-        tags: |
-          jierka/obscreen:v${{ steps.version.outputs.VERSION }}
-          jierka/obscreen:latest
+        tags: ${{ inputs.build_tags }}
         platforms: linux/amd64, linux/arm64/v8, linux/arm/v7
 
     - name: Create and push manifest
       uses: docker/metadata-action@v3
       with:
         images: jierka/obscreen
-        tags: type=semver,pattern=v{{version}}
-        flavor: |
-          latest=true
+        tags: ${{ inputs.manifest_tags }}
+        flavor: ${{ inputs.flavor }}

.github/workflows/nightly-build.yml

@@ -0,0 +1,37 @@
+name: Nightly synced with develop, build and push docker images
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  sync-and-build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        ref: develop
+
+    - name: Set up Git
+      run: |
+        git config --global user.name 'github-actions'
+        git config --global user.email 'github-actions@github.com'
+
+    - name: Sync nightly branch
+      run: |
+        git checkout nightly
+        git merge develop --no-edit
+        git push origin nightly --force
+
+    - name: Checkout nightly branch
+      uses: actions/checkout@v2
+      with:
+        ref: nightly
+
+    - name: Call common build workflow
+      uses: ./.github/workflows/common-docker-build.yml
+      with:
+        build_tags: jierka/obscreen:nightly
+        manifest_tags: type=semver,pattern=nightly
+        flavor: ""

.github/workflows/release-build.yml

@@ -0,0 +1,19 @@
+name: Release build and push docker images
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'version.txt'
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    uses: ./.github/workflows/common-docker-build.yml
+    with:
+      build_tags: |
+        jierka/obscreen:v${{ github.run_number }}
+        jierka/obscreen:latest
+      manifest_tags: type=semver,pattern=v${{ github.run_number }}
+      flavor: latest=true