Workflow for custom builds

.github/workflows/custom-build.yml

@@ -0,0 +1,43 @@
+name: Custom build
+
+# Trigger the workflow every day at 5 AM (UTC).
+on:
+  workflow_dispatch:
+
+jobs:
+  custom-build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out lingua-franca repository
+        uses: actions/checkout@v3
+        with:
+          submodules: recursive
+          fetch-depth: 0
+      - name: Prepare build environment
+        uses: ./.github/actions/prepare-build-env
+      - name: Modify property file to contain the commit SHA
+        shell: bash
+        run: |
+          TIMESTAMP="$(date +'%Y-%m-%d')"
+          SHA="$(git rev-parse --short HEAD)"
+          sed --regexp-extended --in-place "s/^(VERSION = .*)$/\1 ${SHA} ${TIMESTAMP}/" core/src/main/resources/org/lflang/StringsBundle.properties
+      - name: Build and package lf cli tools (nightly build)
+        shell: bash
+        run: |
+          export TIMESTAMP="$(date +'%Y%m%d%H%M%S')"
+          echo "timestamp=$TIMESTAMP" >> "$GITHUB_ENV"
+          ./gradlew build -Pnightly=$TIMESTAMP -PtargetOS=Linux -PtargetArch=x86_64
+          ./gradlew assemble -Pnightly=$TIMESTAMP -PtargetOS=Linux -PtargetArch=aarch64
+          ./gradlew assemble -Pnightly=$TIMESTAMP -PtargetOS=MacOS -PtargetArch=x86_64
+          ./gradlew assemble -Pnightly=$TIMESTAMP -PtargetOS=MacOS -PtargetArch=aarch64
+          ./gradlew assemble -Pnightly=$TIMESTAMP -PtargetOS=Windows -PtargetArch=x86_64
+      - name: Deploy nightly release
+        uses: marvinpinto/action-automatic-releases@latest
+        with:
+          repo_token: "${{ secrets.NIGHTLY_BUILD }}"
+          automatic_release_tag: '${{ github.ref_name }}-${{ github.env.timestamp }}'
+          prerelease: true
+          draft: true
+          title: "Custom Lingua Franca build for ${{ github.ref_name }} branch"
+          files: |
+            build/distributions/*