flutter-sdk-docker/Dockerfile

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

# Set user and group
ARG user=builduser
ARG group=builduser
ARG uid=1000
ARG gid=1000
RUN groupadd -g ${gid} ${group}
RUN useradd -u ${uid} -g ${group} -s /bin/sh -m ${user}

RUN chown -R ${uid}:${gid} ${FLUTTER_ROOT}

# Switch to user
USER ${uid}:${gid}