Ubuntu Docker for building Buildroot (Specifically for the ESP32-S3)

docker-compose.yml

version: '3'

services:
  ubuntu_container:
    image: ubuntubuildenv
    container_name: ubuntud
    volumes:
      - ./ubuntuhome:/home/egg
      - /dev:/dev
    command: ["/bin/bash"]
    stdin_open: true
    tty: true

Dockerfile

# Use Ubuntu 22.04 as the base image
FROM ubuntu:22.04

# Install required packages and cache them
# Some of these packages might be unnecessary, but whatever...
RUN apt-get update && apt-get install -y \
    git wget curl tar make cmake gcc g++ python3 libncurses-dev build-essential \
    libssl-dev bc xz-utils unzip rsync flex bison gettext libglib2.0-dev libfdt-dev \
    libpixman-1-dev zlib1g-dev autoconf texinfo help2man gperf libtool-bin gawk \
    python3-pip tmux sudo

# Clean up the package cache to reduce the image size
RUN apt-get clean && rm -rf /var/lib/apt/lists/*

# Create a user named "user" and set sudo privileges
RUN useradd -m -s /bin/bash egg && \
    echo "egg ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers

# Switch to the "user" from now on
USER egg

# Set up the user home directory
WORKDIR /home/egg
RUN sudo chown -R egg:egg /home/egg

# Define the entry point
CMD ["/bin/bash"]

torun.sh

docker build -t ubuntubuildenv .
docker compose up -d
docker exec -it ubuntud /bin/bash

# Run in the container, seems to be needed. Possibly because the home folder is mounted as a folder in the host
sudo chown -R egg:egg /home/egg