Add small release script to help me out next time

Signed-off-by: Douglas Camata <159076+douglascamata@users.noreply.github.com>

Author: douglascamata

scripts/release.sh

@@ -0,0 +1,115 @@
+#!/bin/bash
+
+set -e
+
+# Parse arguments
+DRY_RUN=false
+VERSION=""
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --dry-run)
+      DRY_RUN=true
+      shift
+      ;;
+    *)
+      VERSION=$1
+      shift
+      ;;
+  esac
+done
+
+if [[ "$VERSION" == v* ]]; then
+  echo "Error: Version should not start with 'v'. Please provide version like '1.2.3' instead of 'v1.2.3'."
+  exit 1
+fi
+
+if [ -z "$VERSION" ]; then
+  echo "Usage: $0 [--dry-run] <version>"
+  echo ""
+  echo "Options:"
+  echo "  --dry-run    Show what would be done without making any changes"
+  exit 1
+fi
+
+MAJOR_VERSION=$(echo "$VERSION" | cut -d. -f1)
+
+if [ "$DRY_RUN" = true ]; then
+  echo "=== DRY RUN MODE ==="
+  echo "No changes will be made to files or git repository"
+  echo ""
+fi
+
+# --- Update CHANGELOG.md ---
+CHANGELOG_FILE="CHANGELOG.md"
+REPO_URL="https://github.com/douglascamata/setup-docker-macos-action"
+# Get the previous version from the [Unreleased] link in the changelog.
+PREVIOUS_VERSION=$(grep '\[Unreleased\]:' "$CHANGELOG_FILE" | sed -E 's/.*compare\/(.*)\.\.\.HEAD/\1/')
+CURRENT_DATE=$(date +%Y-%m-%d)
+
+if [ "$DRY_RUN" = true ]; then
+  echo "[DRY RUN] Would update CHANGELOG.md:"
+  echo "  - Current version: $PREVIOUS_VERSION"
+  echo "  - New version: v$VERSION"
+  echo "  - Date: $CURRENT_DATE"
+  echo "  - Would add: ## [v$VERSION] - $CURRENT_DATE"
+  echo "  - Would update [Unreleased] link to compare from v$VERSION"
+  echo "  - Would add [v$VERSION] link: $REPO_URL/compare/$PREVIOUS_VERSION...v$VERSION"
+else
+  echo "Updating CHANGELOG.md for new version v$VERSION..."
+
+  # Use awk to update the changelog in place.
+  # It's more robust and readable than sed for this task.
+  awk \
+    -v version="v$VERSION" \
+    -v date="$CURRENT_DATE" \
+    -v previous_version="$PREVIOUS_VERSION" \
+    -v repo_url="$REPO_URL" \
+    '
+    # Find the "Unreleased" header and add the new version header below it.
+    /## \[Unreleased\]/ {
+      print "## [Unreleased]"
+      print ""
+      printf("## [%s] - %s\n", version, date)
+      next
+    }
+    # Find the "Unreleased" link definition at the bottom of the file.
+    /\[Unreleased\]:/ {
+      # Update the "Unreleased" link to compare from the new version to HEAD.
+      sub(previous_version "...", version "...")
+      print
+      # Add the link definition for the new version, comparing the last two versions.
+      printf("[%s]: %s/compare/%s...%s\n", version, repo_url, previous_version, version)
+      next
+    }
+    # Print all other lines as-is.
+    { print }
+    ' "$CHANGELOG_FILE" > "$CHANGELOG_FILE.tmp" && mv "$CHANGELOG_FILE.tmp" "$CHANGELOG_FILE"
+
+  echo "CHANGELOG.md has been updated."
+  echo "Please review the changes before proceeding."
+  read -p "Proceed with commit? (y/n) " -n 1 -r
+  git add "$CHANGELOG_FILE"
+  git commit -m "Prepare changelog for v$VERSION"
+fi
+echo
+
+# --- Tagging ---
+if [ "$DRY_RUN" = true ]; then
+  echo "[DRY RUN] Would create the following tags:"
+  echo "  - v$VERSION"
+  echo "  - v$MAJOR_VERSION (force update)"
+  echo "[DRY RUN] Would push tags to remote"
+else
+  echo "The following tags will be created: v$VERSION, v$MAJOR_VERSION"
+  echo "The tags will NOT be pushed automatically."
+  read -p "Are you sure? (y/n) " -n 1 -r
+  echo
+  if [[ $REPLY =~ ^[Yy]$ ]]
+  then
+    git tag "v$VERSION"
+    git tag -f "v$MAJOR_VERSION"
+    echo "Tags v$VERSION, v$MAJOR_VERSION prepared. Don't forget to review tags and commits before pushing them."
+    echo "You can push the tags with: git push --tags -f"
+  fi
+fi