fix linux build

Author: Heap-Hop

.github/workflows/release.yml

@@ -50,7 +50,7 @@ jobs:
         if: matrix.os == 'ubuntu-22.04'
         run: |
           sudo apt-get update
-          sudo apt-get install -y clang cmake ninja-build pkg-config libgtk-3-dev liblzma-dev
+          sudo apt-get install -y clang cmake ninja-build pkg-config libgtk-3-dev liblzma-dev libayatana-appindicator3-dev
 
       - name: Install Windows dependencies (NASM)
         if: matrix.os == 'windows-latest'

README.md

@@ -124,7 +124,7 @@ The binary will be located at:
 
 #### Ubuntu
 ```
-sudo apt-get install -y clang cmake ninja-build pkg-config libgtk-3-dev
+sudo apt-get install -y clang cmake ninja-build pkg-config libgtk-3-dev libayatana-appindicator3-dev
 
 cd flutter_app
 flutter build linux --release