enable only android

Dockerfile

@@ -15,7 +15,18 @@ USER ${USERNAME}
 
 RUN sdkmanager \
     "emulator" \
-    "platform-tools"
+    "platform-tools" \
+    && dart --disable-analytics \
+    && flutter config \
+    --no-analytics \
+    --no-enable-web \
+    --no-enable-linux-desktop \
+    --no-enable-macos-desktop \
+    --no-enable-windows-desktop \
+    --no-enable-ios \
+    --no-enable-fuchsia \
+    --enable-android \
+    && flutter precache --universal --android
 
 WORKDIR ${WORKSPACE}