message: just build appimage for linux
diff: yarn do server_manager/electron_app/build
  -# Auto-updates only work for AppImage:
  -# https://github.com/electron-userland/electron-builder/issues/2498
  $ROOT_DIR/src/server_manager/node_modules/.bin/electron-builder \
  --projectDir=build/server_manager/electron_app/static \
  --config.asarUnpack=server_manager/web_app/images \
  --publish=never \
  --config.publish.provider=generic \
  --config.publish.url=https://raw.githubusercontent.com/Jigsaw-Code/outline-releases/master/manager/ \
  - --x64 \
  --linux AppImage \
  --config.linux.icon=icons/png \
  --config.linux.category=Network \
  --config.artifactName='Outline-Manager.${ext}'
  -
  -for arch in ia32 x64; do
  - $ROOT_DIR/src/server_manager/node_modules/.bin/electron-builder \
  - --projectDir=build/server_manager/electron_app/static \
  - --config.asarUnpack=server_manager/web_app/images \
  - --publish=never \
  - --$arch \
  - --linux deb rpm tar.gz \
  - --config.linux.icon=icons/png \
  - --config.linux.category=Network \
  - --config.artifactName='Outline-Manager-'${arch}'.${ext}'
  -
  -done
  