Update release script to build all OSes and do the release

.github/workflows/release.yml

@@ -4,10 +4,27 @@ on:
   push:
     tags:
       - "v*"
+  workflow_dispatch:
 
 jobs:
-  release:
-    runs-on: windows-latest
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - name: Linux amd64
+            image: ubuntu-24.04
+          - name: Linux arm64
+            image: ubuntu-24.04-arm
+          - name: macOS
+            image: macos-latest
+          - name: Windows
+            image: windows-latest
+    runs-on: ${{ matrix.os.image }}
+    name: Build (${{ matrix.os.name }})
+    permissions:
+      contents: write
+      packages: write
 
     steps:
       - name: Checkout code
@@ -18,10 +35,18 @@ jobs:
         with:
           node-version: "24"
 
+      - name: Install Flatpak tooling
+        if: startsWith(matrix.os.name, 'Linux')
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y flatpak flatpak-builder elfutils
+          flatpak remote-add --if-not-exists --user flathub https://flathub.org/repo/flathub.flatpakrepo
+          flatpak install -y --user flathub org.freedesktop.Platform//23.08 org.freedesktop.Sdk//23.08 org.electronjs.Electron2.BaseApp//23.08
+
       - name: Install dependencies
-        run: npm install
+        run: npm ci
 
       - name: Build and publish
         env:
-          GH_TOKEN: ${{ secrets.GH_TOKEN }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: npm run publish

README.md

@@ -19,6 +19,26 @@ This project is not affliated with the RomM project. It is a third-party client
 - Sync save data between local storage and RomM server
 - Support for multiple emulators (e.g., PPSSPP, Dolphin...)
 
+## Downloads
+
+Pre-built packages are published on the [releases page](https://github.com/chaun14/romm-client/releases):
+
+- **Windows** — NSIS installer (`.exe`)
+- **macOS** — disk image (`.dmg`)
+- **Linux** — AppImage (`.AppImage`) and Flatpak (`.flatpak`)
+
+## Building from source
+
+```bash
+npm install
+npm run dist:linux   # builds both AppImage and Flatpak
+npm run dist:win     # builds the Windows installer
+npm run dist:mac     # builds the macOS disk image
+```
+
+Building the Flatpak locally requires `flatpak`, `flatpak-builder` and the
+`org.electronjs.Electron2.BaseApp//23.08` runtime to be installed.
+
 ## Supported Emulators
 
 - PPSSPP (PlayStation Portable)

package.json

@@ -14,7 +14,7 @@
     "dist:win": "npm run build && electron-builder --win",
     "dist:mac": "npm run build && electron-builder --mac",
     "dist:linux": "npm run build && electron-builder --linux",
-    "publish": "npm run build && electron-builder --win --publish always"
+    "publish": "npm run build && electron-builder --publish always"
   },
   "keywords": [
     "romm",
@@ -79,7 +79,29 @@
       "target": "dmg"
     },
     "linux": {
-      "target": "AppImage"
+      "target": [
+        "AppImage",
+        "flatpak"
+      ],
+      "category": "Game",
+      "icon": "build/icon.png",
+      "artifactName": "RomMClient-${version}-${arch}.${ext}",
+      "synopsis": "Desktop client for the RomM API",
+      "syncDesktopName": true
+    },
+    "flatpak": {
+      "runtimeVersion": "23.08",
+      "baseVersion": "23.08",
+      "branch": "stable",
+      "finishArgs": [
+        "--share=ipc",
+        "--socket=x11",
+        "--socket=wayland",
+        "--socket=pulseaudio",
+        "--share=network",
+        "--device=all",
+        "--filesystem=home"
+      ]
     },
     "nsis": {
       "oneClick": false,