feat: have workflow build on demand via /build comment

.github/workflows/build-mobile-comment.yml

@@ -0,0 +1,116 @@
+name: "build mobile app via /build"
+
+on:
+  issue_comment:
+    types: [created]
+
+permissions:
+    contents: write
+    pull-requests: write
+
+jobs:   
+    build-android:
+        runs-on: ubuntu-latest
+        if: github.event.issue.pull_request && contains(github.event.comment.body, '/build')
+        steps:
+         - uses: xt0rted/pull-request-comment-branch@v2
+           id: comment-branch
+
+         - name: Checkout code
+           uses: actions/checkout@v4
+           with:
+            ref: ${{ steps.comment-branch.outputs.head_ref }}
+
+         - name: Install Node.js
+           uses: actions/setup-node@v4
+           with:
+            node-version: 21
+    
+         - uses: pnpm/action-setup@v2
+           name: Install pnpm
+           with:
+            version: 8
+            run_install: false
+    
+         - name: Set up JDK 17
+           uses: actions/setup-java@v3
+           with:
+            java-version: '17'
+            distribution: 'temurin'
+    
+         - name: Setup Android SDK
+           uses: android-actions/setup-android@v3
+    
+         - name: Install dependencies
+           run: pnpm install
+    
+         - name: Build Android app
+           run: cd apps/expo && pnpm run apk
+    
+         - name: Rename apk
+           run: cd apps/expo && mv android/app/build/outputs/apk/release/app-release.apk android/app/build/outputs/apk/release/movie-web.apk
+        
+         - name: Comment on pull request
+           uses: thollander/actions-comment-pull-request@v2
+           with:
+            filePath: ./apps/expo/android/app/build/outputs/apk/release/movie-web.apk
+    
+         - name: Upload movie-web.apk as artifact
+           uses: actions/upload-artifact@v4
+           with:
+            name: apk
+            path: ./apps/expo/android/app/build/outputs/apk/release/movie-web.apk
+    
+    build-ios:
+        runs-on: macos-14
+        if: github.event.issue.pull_request && contains(github.event.comment.body, '/build')
+        steps:
+         - uses: xt0rted/pull-request-comment-branch@v2
+           id: comment-branch
+
+         - name: Checkout code
+           uses: actions/checkout@v4
+           with:
+            ref: ${{ steps.comment-branch.outputs.head_ref }}
+    
+         - name: Xcode Select Version
+           uses: maxim-lobanov/setup-xcode@v1
+           with:
+            xcode-version: '15.1.0'
+    
+         - name: Install Node.js
+           uses: actions/setup-node@v4
+           with:
+            node-version: 21
+    
+         - uses: pnpm/action-setup@v2
+           name: Install pnpm
+           with:
+            version: 8
+            run_install: false
+    
+         - name: Install dependencies
+           run: pnpm install
+    
+         - name: Build iOS app
+           run: cd apps/expo && pnpm run ipa
+            
+         - name: Export .ipa from .app
+           run: |
+            cd apps/expo
+            mkdir -p ios/build/Build/Products/Release-iphoneos/Payload
+            mv ios/build/Build/Products/Release-iphoneos/movieweb.app ios/build/Build/Products/Release-iphoneos/Payload/
+            cd ios/build/Build/Products/Release-iphoneos
+            zip -r ../../../movie-web.ipa Payload
+    
+         - name: Comment on pull request
+           uses: thollander/actions-comment-pull-request@v2
+           with:
+            filePath: ./apps/expo/ios/build/movie-web.ipa
+    
+         - name: Upload movie-web.ipa as artifact
+           uses: actions/upload-artifact@v4
+           with:
+            name: ipa
+            path: ./apps/expo/ios/build/movie-web.ipa
+    

.github/workflows/build-mobile.yml

@@ -7,6 +7,7 @@ on:
 
 permissions:
   contents: write
+  pull-requests: write
 
 jobs:   
   build-android: