feat: Add comprehensive Linux build support (#3673)

ui/desktop/README.md

@@ -14,12 +14,33 @@ npm install
 npm run start
 ```
 
+## Platform-specific build requirements
+
+### Linux
+For building on Linux distributions, you'll need additional system dependencies:
+
+**Debian/Ubuntu:**
+```bash
+sudo apt install dpkg fakeroot
+```
+
+**Arch/Manjaro:**
+```bash
+sudo pacman -S dpkg fakeroot
+```
+
+**Fedora/RHEL:**
+```bash
+sudo dnf install dpkg-dev fakeroot
+```
+
 # Building notes
 
 This is an electron forge app, using vite and react.js. `goosed` runs as multi process binaries on each window/tab similar to chrome.
 
-see `package.json`: 
+## Building for different platforms
 
+### macOS
 `npm run bundle:default` will give you a Goose.app/zip which is signed/notarized but only if you setup the env vars as per `forge.config.ts` (you can empty out the section on osxSign if you don't want to sign it) - this will have all defaults.
 
 `npm run bundle:preconfigured` will make a Goose.app/zip signed and notarized, but use the following:
@@ -32,6 +53,38 @@ see `package.json`:
 
 This allows you to set for example GOOSE_PROVIDER__TYPE to be "databricks" by default if you want (so when people start Goose.app - they will get that out of the box). There is no way to set an api key in that bundling as that would be a terrible idea, so only use providers that can do oauth (like databricks can), otherwise stick to default goose.
 
+### Linux
+For Linux builds, first ensure you have the required system dependencies installed (see above), then:
+
+1. Build the Rust backend:
+```bash
+cd ../..  # Go to project root
+cargo build --release -p goose-server
+```
+
+2. Copy the server binary to the expected location:
+```bash
+mkdir -p src/bin
+cp ../../target/release/goosed src/bin/
+```
+
+3. Build the application:
+```bash
+# For ZIP distribution (works on all Linux distributions)
+npm run make -- --targets=@electron-forge/maker-zip
+
+# For DEB package (Debian/Ubuntu)
+npm run make -- --targets=@electron-forge/maker-deb
+```
+
+The built application will be available in:
+- ZIP: `out/make/zip/linux/x64/Goose-linux-x64-{version}.zip`
+- DEB: `out/make/deb/x64/goose_{version}_amd64.deb`
+- Executable: `out/Goose-linux-x64/Goose`
+
+### Windows
+Use the existing Windows build process as documented.
+
 
 # Running with goosed server from source
 

ui/desktop/forge.config.ts

@@ -54,11 +54,11 @@ module.exports = {
   makers: [
     {
       name: '@electron-forge/maker-zip',
-      platforms: ['darwin', 'win32'],
+      platforms: ['darwin', 'win32', 'linux'],
       config: {
         arch: process.env.ELECTRON_ARCH === 'x64' ? ['x64'] : ['arm64'],
         options: {
-          icon: 'src/images/icon.ico',
+          icon: process.platform === 'linux' ? 'src/images/icon.png' : 'src/images/icon.ico',
         },
       },
     },