Build with GitHub Actions, not Jenkinsfile

.github/FUNDING.yml

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+# These are supported funding model platforms
+
+github: [castle-engine, michaliskambi] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: castleengine # Replace with a single Patreon username
+open_collective: castle-engine # Replace with a single Open Collective username
+# ko_fi: # Replace with a single Ko-fi username
+# tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+# community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+# liberapay: # Replace with a single Liberapay username
+# issuehunt: # Replace with a single IssueHunt username
+# otechie: # Replace with a single Otechie username
+# custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/dependabot.yml

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+# Check that GitHub Actions use latest versions of plugins.
+# See https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot .
+
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/build.yml

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+# ----------------------------------------------------------------------------
+# GitHub Actions workflow to build this application.
+# Using latest Castle Game Engine ( https://castle-engine.io/ ) snapshot.
+# For multiple platforms (Linux, Windows, macOS).
+
+# ( Not Android, for now -- through it could work on Android,
+# it requires to rearrange the code to follow latest CGE best practices
+# for cross-platform projects, instead of doing everything from main LPR file.
+# See https://castle-engine.io/manual_cross_platform.php . )
+#
+# This uses GitHub-hosted runners, that is: you don't need to set up any server
+# infrastructure, GitHub provides it all for free for open-source projects.
+#
+# See docs:
+# - https://castle-engine.io/github_actions
+# - https://docs.github.com/en/actions
+# ----------------------------------------------------------------------------
+
+name: Build
+
+on:
+  pull_request:
+  # Run on push to any branch, not on tags.
+  # Checking tags is not useful for us (we check the commit when it happened
+  # at branch) and we would waste 2x time to update on every "snapshpt" tag change.
+  push:
+    branches:
+      - '**'
+
+jobs:
+  # Build for platforms supported by
+  # CGE Docker image https://hub.docker.com/r/kambi/castle-engine-cloud-builds-tools/ .
+  #
+  # Since setting up Docker image takes majority of time (5-6 mins)
+  # compared to actually getting and compiling CGE (1 min)
+  # and building application (~1 min for each platform),
+  # we build all platforms possible within one job.
+  build-using-docker:
+    name: Build Using Docker
+    runs-on: ubuntu-latest
+    container: kambi/castle-engine-cloud-builds-tools:cge-none
+    steps:
+      - uses: actions/checkout@v4
+      # Set env CASTLE_ENGINE_PATH following
+      # https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#environment-files
+      # https://brandur.org/fragments/github-actions-env-vars-in-env-vars
+      - name: Castle Game Engine - Env CASTLE_ENGINE_PATH
+        run: echo "CASTLE_ENGINE_PATH=$GITHUB_WORKSPACE/castle-engine" >> $GITHUB_ENV
+      - name: Castle Game Engine - Env PATH (non-Windows)
+        run: echo "PATH=$PATH:$CASTLE_ENGINE_PATH/tools/build-tool/" >> $GITHUB_ENV
+      - name: Castle Game Engine - Clone snapshot
+        run: git clone --depth 1 --single-branch --branch snapshot https://github.com/castle-engine/castle-engine/
+      - name: Castle Game Engine - Build
+        run: cd $CASTLE_ENGINE_PATH/tools/build-tool/ && ./castle-engine_compile.sh
+
+      - name: Package Windows
+        run: castle-engine package --os=win64 --cpu=x86_64 --verbose
+      - name: Archive Artifacts
+        # See https://github.com/actions/upload-artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: windows-build
+          # Note: Keep paths that start with asterisk in double qoutes, to avoid misinterpreting as YAML reference.
+          # See https://stackoverflow.com/questions/19109912/yaml-do-i-need-quotes-for-strings-in-yaml
+          # https://yamlchecker.com/
+          path: "*-win64-x86_64.zip"
+          if-no-files-found: error
+
+      - name: Package Linux
+        run: castle-engine package --os=linux --cpu=x86_64 --verbose
+      - name: Archive Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: linux-build
+          path: "*-linux-x86_64.tar.gz"
+          if-no-files-found: error
+
+  # Build for platforms supported from macOS.
+  # This means to build for macOS and (maybe in the future) iOS.
+  build-macos:
+    name: Build Using macOS
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install FPC+Lazarus
+        uses: gcarreno/[email protected]
+        with:
+          lazarus-version: stable
+      - name: Castle Game Engine - Env CASTLE_ENGINE_PATH
+        run: echo "CASTLE_ENGINE_PATH=$GITHUB_WORKSPACE/castle-engine" >> $GITHUB_ENV
+      - name: Castle Game Engine - Env PATH (non-Windows)
+        run: echo "PATH=$PATH:$CASTLE_ENGINE_PATH/tools/build-tool/" >> $GITHUB_ENV
+      - name: Castle Game Engine - Clone snapshot
+        run: git clone --depth 1 --single-branch --branch snapshot https://github.com/castle-engine/castle-engine/
+      - name: Castle Game Engine - Build
+        run: cd $CASTLE_ENGINE_PATH/tools/build-tool/ && ./castle-engine_compile.sh
+
+      - name: Package macOS
+        run: castle-engine package --os=darwin --cpu=x86_64 --verbose
+      - name: Archive Artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: macos-build
+          path: "*-darwin-x86_64.zip"
+          if-no-files-found: error
+
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    # Only upload release if all builds, on all runners, succeeded.
+    needs: [build-using-docker, build-macos]
+    steps:
+    - name: Download packaged releases
+      uses: actions/download-artifact@v4
+      with:
+        merge-multiple: true
+    - name: List downloaded files
+      run: ls -R
+    - name: GH CLI status
+      env:
+        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: gh auth status
+    # Releases files in the "snapshot" release.
+    - name: Release Artifacts
+      if: ${{ github.ref == 'refs/heads/master' }}
+      run: gh release --repo ${{ github.repository }} upload snapshot --clobber *.zip *.tar.gz
+      env:
+        GH_TOKEN: ${{ github.token }}
+
+  update-release-tag:
+    name: Update Release Tag (make snapshot tag point to the build commit on master branch)
+    runs-on: ubuntu-latest
+    needs: [release]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Update Release Tag
+      if: ${{ github.ref == 'refs/heads/master' }}
+      run: |
+        # --force allows to overwrite previous tag
+        git tag --force snapshot
+        # --force allows to push with overwritten tag
+        git push --force origin snapshot