FROM ubuntu:22.04 ARG CHANNEL=stable RUN apt update RUN apt install -y curl git wget unzip RUN apt clean ENV FLUTTER_ROOT=/usr/local/flutter RUN git clone -b ${CHANNEL} https://github.com/flutter/flutter.git ${FLUTTER_ROOT} # Set flutter environment path ENV PATH="/usr/local/flutter/bin:/usr/local/flutter/bin/cache/dart-sdk/bin:${PATH}" RUN flutter doctor # Propably not needed since we clone that branch above, but to be sure RUN flutter channel ${CHANNEL} RUN flutter config --enable-web RUN flutter upgrade RUN flutter precache RUN flutter --version