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

Changelog-None

.github/workflows/release.yml

@@ -0,0 +1,43 @@
+---
+# https://docs.corelightning.org/docs/release-checklist
+name: "Release 🚀"
+on:
+  push:
+    # TODO: Remove after testing.
+    branches:
+      - 7776-release-builds-automation
+    tags:
+      - 'v[0-9]+.[0-9]+'
+      - 'v[0-9]+.[0-9]+.[0-9]+'
+      - 'v[0-9]+.[0-9]+[0-9a-z]+'
+  workflow_dispatch:
+
+jobs:
+  ubuntu-noble:
+    name: Release
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Git checkout
+        uses: actions/checkout@v4
+
+      - name: Validate release
+        run: tools/check-release.sh
+
+      # 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
+        # TODO: Remove forced version after testing.
+        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 +1,55 @@
+#! /bin/bash
+
+set -e
+
+# Git release tag checks and validation, to catch common release
+#  tagging issues prior to build via Github Actions.
+#
+# 1. The 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.
+
+echo "GITHUB_REF_TYPE=$GITHUB_REF_TYPE"
+echo "GITHUB_REF_NAME=$GITHUB_REF_NAME"
+
+# The tag should point to the HEAD of the branch.
+VERSION=$(git tag --points-at HEAD)
+echo "VERSION=$VERSION"
+if [ "$VERSION" = "" ]; then
+    echo "No tagged version at HEAD?" >&2
+    exit 1
+fi
+
+if [ "$GITHUB_REF_TYPE" = "tag" ]; then
+    # The pushed tag should match the branch tag at the HEAD.
+    if [ "$VERSION" != "$GITHUB_REF_NAME" ]; then
+        echo "The pushed tag must match the version tag." >&2
+        exit 1
+    fi
+
+    # The pushed tag should match the `make version` target output.
+    MAKE_VERSION=$(make version)
+    echo "MAKE_VERSION=$MAKE_VERSION"
+    if [ "$MAKE_VERSION" != "$GITHUB_REF_NAME" ]; then
+        echo "The pushed tag must match the `make version` target output." >&2
+        exit 1
+    fi
+fi
+
+# The CHANGELOG.md contains a header entry for the version tag.
+CHANGELOG_TITLE=$(grep "## \[$VERSION\]" CHANGELOG.md)
+if [ $? != 0 ]; 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