build: Release build automation ([ElementsProject#7776]).

Changelog-None

.github/workflows/release.yml

@@ -0,0 +1,66 @@
+---
+# https://docs.corelightning.org/docs/release-checklist
+name: "Release 🚀"
+on:
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+'
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+      - 'v[0-9]+.[0-9]+[0-9a-z]+'
+  workflow_dispatch:
+
+jobs:
+  check:
+    name: Check
+    outputs:
+      version: steps.capture.outputs.version
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Git checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-tags: true
+
+      - name: Determine version from pushed tag
+        if: ${{ github.ref_type == 'tag' }}
+        run: echo "VERSION=${{ github.ref_name }}" >> "$GITHUB_ENV"
+
+      # Relevant for testing branches.
+      - name: Determine version from pushed branch tag
+        if: ${{ github.ref_type == 'branch' }}
+        run: echo "VERSION=$(git tag --points-at HEAD)" >> "$GITHUB_ENV"
+
+      - name: Validate release
+        run: tools/check-release.sh --version=${VERSION}
+
+      - name: Catpure version output
+        id: capture
+        run: echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
+
+  release:
+    name: Release
+    needs: check
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Git checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-tags: true
+
+      # tools/build-release.sh requires lowdown
+      - name: Prepare base environment
+        run: |
+          sudo apt-get install -y lowdown
+          ./configure
+
+      - name: Build environment setup
+        run: contrib/cl-repro.sh
+
+      - name: Build release
+        run: tools/build-release.sh bin-Fedora-28-amd64 bin-Ubuntu
+
+      - name: Upload release artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          path: release/
+          if-no-files-found: error

tools/build-release.sh

@@ -158,7 +158,7 @@ for target in $TARGETS; do
             # Capitalize the first letter of distro
             D=$(echo "$d" | awk '{print toupper(substr($0,1,1))substr($0,2)}')
 			echo "Building Ubuntu $D Image"
-			docker run --rm -v "$(pwd)":/repo -e FORCE_MTIME="$MTIME" -e FORCE_VERSION="$VERSION" -ti cl-repro-"$d"
+			docker run --rm -v "$(pwd)":/repo -e FORCE_MTIME="$MTIME" -e FORCE_VERSION="$VERSION" cl-repro-"$d"
             echo "Ubuntu $D Image Built"
 		done
         ;;

tools/check-release.sh

@@ -0,0 +1,74 @@
+#! /bin/bash
+
+set -e
+
+# Checks a version tag and performs validation, to catch common release
+#  tagging issues prior to build via Github Actions.
+#
+# 1. The version tag should point to the HEAD of the branch.
+#     - tools/build-release.sh#67
+# 2. The pushed tag should match the branch tag at the HEAD.
+# 3. The CHANGELOG.md contains a header entry for the version tag.
+# 4. The CHANGELOG.md entry for that version tag can be parsed for a date.
+
+for arg; do
+    case "$arg" in
+    --version=*)
+	    VERSION=${arg#*=}
+        ;;
+	--help)
+	    echo "Usage: [--version=<ver>]"
+	    exit 0
+	    ;;
+	*)
+	    echo "Unknown arg $arg" >&2
+	    exit 1
+	    ;;
+    esac
+    shift
+done
+
+echo "VERSION: ${VERSION}"
+
+# Version is required.
+if [ "$VERSION" = "" ]; then
+    echo "The --version argument is required."
+    exit 1
+fi
+
+# A tag should point to the HEAD of the branch.
+HEAD_VERSION=$(git tag --points-at HEAD)
+if [ "$HEAD_VERSION" = "" ]; then
+    echo "No tagged version at HEAD?" >&2
+    exit 1
+fi
+
+# The version tag should match the branch tag at the HEAD.
+if [ "$HEAD_VERSION" != "$VERSION" ]; then
+    echo "The HEAD tag must match the version tag." >&2
+    exit 1
+fi
+
+# The version tag should match the `make version` target output.
+MAKE_VERSION=$(make version)
+echo "MAKE_VERSION=$MAKE_VERSION"
+if [ "$MAKE_VERSION" != "$VERSION" ]; then
+    echo "The version tag must match the \`make version\` target output." >&2
+    exit 1
+fi
+
+# The CHANGELOG.md contains a header entry for the version tag.
+CHANGELOG_TITLE=$(grep "## \[${VERSION#v}\]" CHANGELOG.md)
+if [ "$CHANGELOG_TITLE" = "" ]; then
+    echo "No entry in the CHANGELOG.md found for $VERSION." >&2
+    exit 1
+fi
+echo "CHANGELOG_TITLE=$CHANGELOG_TITLE"
+
+# The CHANGELOG.md entry for that version tag can be parsed for a date.
+RELEASE_DATE=$(sed -n "s/^## \\[.*${VERSION#v}\\] - \\([-0-9]*\\).*/\\1/p" < CHANGELOG.md)
+echo "RELEASE_DATE=$RELEASE_DATE"
+if [ "$RELEASE_DATE" = "" ]; then
+    echo "The release title in CHANGELOG.md cannot be parsed for a date." >&2
+    exit 1
+fi