Add release package publishing workflow

scripts/package-release.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+VERSION="${VERSION:-$(git describe --tags --always --dirty 2>/dev/null || echo dev)}"
+OUT_DIR="${OUT_DIR:-dist-release}"
+PLATFORMS="${PLATFORMS:-linux/amd64 linux/arm64 windows/amd64 darwin/amd64 darwin/arm64}"
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT_DIR"
+
+if [[ "$VERSION" == *dirty* ]]; then
+  echo "Refusing to package a dirty working tree version: $VERSION" >&2
+  exit 1
+fi
+
+rm -rf "$OUT_DIR"
+mkdir -p "$OUT_DIR"
+
+echo "Building frontend bundle"
+(cd web && npm ci && npm run build)
+
+for target in $PLATFORMS; do
+  os="${target%/*}"
+  arch="${target#*/}"
+  name="MediaStationGo_${VERSION}_${os}_${arch}"
+  work="$OUT_DIR/$name"
+  mkdir -p "$work/web"
+
+  ext=""
+  if [[ "$os" == "windows" ]]; then
+    ext=".exe"
+  fi
+
+  echo "Building $target"
+  CGO_ENABLED=0 GOOS="$os" GOARCH="$arch" go build \
+    -trimpath -ldflags="-s -w" \
+    -o "$work/mediastation-go$ext" ./cmd/server
+
+  cp -R web/dist "$work/web/dist"
+  cp docker-compose.yml config.example.yaml README.md README_EN.md LICENSE "$work/"
+
+  if [[ "$os" == "windows" ]]; then
+    (cd "$OUT_DIR" && python3 - "$name" "$name.zip" <<'PY'
+import os
+import sys
+import zipfile
+
+root, archive = sys.argv[1], sys.argv[2]
+with zipfile.ZipFile(archive, "w", zipfile.ZIP_DEFLATED) as zf:
+    for base, _, files in os.walk(root):
+        for filename in files:
+            path = os.path.join(base, filename)
+            zf.write(path, path)
+PY
+    )
+  else
+    tar -C "$OUT_DIR" -czf "$OUT_DIR/$name.tar.gz" "$name"
+  fi
+  rm -rf "$work"
+done
+
+echo "Release packages written to $OUT_DIR"