returning nightly builds

.github/workflows/nightly_merge.yml

@@ -0,0 +1,29 @@
+name: Dev -> Main
+
+on:
+  schedule:
+    - cron:  '21 3 * * 3,6'
+  workflow_dispatch:
+
+jobs:
+  develop-to-main:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: 🚛 Checkout Code
+      uses: actions/checkout@v2
+
+    - name: 🔨 Merge develop to main
+      uses: everlytic/branch-merge@1.1.0
+      with:
+        github_token: ${{ secrets.YNPUT_BOT_TOKEN }}
+        source_ref: 'develop'
+        target_branch: 'main'
+        commit_message_template: '[Automated] Merged {source_ref} into {target_branch}'
+
+    - name: Invoke pre-release workflow
+      uses: benc-uk/workflow-dispatch@v1
+      with:
+        workflow: Nightly Prerelease
+        token: ${{ secrets.YNPUT_BOT_TOKEN }}

.github/workflows/prerelease.yml

@@ -0,0 +1,67 @@
+name: Nightly Prerelease
+
+on:
+  workflow_dispatch:
+
+
+jobs:
+  create_nightly:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: 🚛 Checkout Code
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: 3.9
+
+    - name: Install Python requirements
+      run: pip install gitpython semver PyGithub
+
+    - name: 🔎 Determine next version type
+      id: version_type
+      run: |
+        TYPE=$(python ./tools/ci_tools.py --bump --github_token ${{ secrets.YNPUT_BOT_TOKEN }})
+        echo "type=${TYPE}" >> $GITHUB_OUTPUT
+
+    - name: 💉 Inject new version into files
+      id: version
+      if: steps.version_type.outputs.type != 'skip'
+      run: |
+        NEW_VERSION_TAG=$(python ./tools/ci_tools.py --nightly --github_token ${{ secrets.YNPUT_BOT_TOKEN }})
+        echo "next_tag=${NEW_VERSION_TAG}" >> $GITHUB_OUTPUT
+
+    - name: 💾 Commit and Tag
+      id: git_commit
+      if: steps.version_type.outputs.type != 'skip'
+      run: |
+        git config user.email ${{ secrets.CI_EMAIL }}
+        git config user.name ${{ secrets.CI_USER }}
+        git checkout main
+        git pull
+        git add .
+        git commit -m "[Automated] Bump version"
+        tag_name="CI/${{ steps.version.outputs.next_tag }}"
+        echo $tag_name
+        git tag -a $tag_name -m "nightly build"
+
+    - name: Push to protected main branch
+      uses: CasperWA/push-protected@v2.10.0
+      with:
+        token: ${{ secrets.YNPUT_BOT_TOKEN }}
+        branch: main
+        tags: true
+        unprotect_reviews: true
+
+    - name: 🔨 Merge main back to develop
+      uses: everlytic/branch-merge@1.1.0
+      if: steps.version_type.outputs.type != 'skip'
+      with:
+        github_token: ${{ secrets.YNPUT_BOT_TOKEN }}
+        source_ref: 'main'
+        target_branch: 'develop'
+        commit_message_template: '[Automated] Merged {source_ref} into {target_branch}'