devcontainer.json

{
  "name": "Espresso Dev",
  "dockerComposeFile": ["./docker-compose.yml"],
  "service": "espresso-dev",
  "workspaceFolder": "/home/developer/espresso",
  "settings": {
    "terminal.integrated.shell.linux": null
  },
  "runServices": ["caddy"],
  "extensions": [],
}

docker-compose.yaml

version: '3'
services:
  espresso-dev:
    user: developer
    build:
      context: .
      dockerfile: ./Dockerfile
    volumes:
      - ..:/home/developer/espresso
    tty: true
    stdin_open: true
    networks:
      internal-network:
        aliases: # alias both so we can use the staging caddyfile
          - 'frontend'
          - 'backend'
  caddy:
    image: abiosoft/caddy:1.0.3-no-stats
    volumes:
      - .:/root/.caddy
      - ../deployment/staging/Caddyfile:/etc/Caddyfile
    ports:
      - '2015:2015'
      - '80:80'
      - '443:443'
    depends_on:
      - espresso-dev
    networks:
      outside-world:
      internal-network:
networks:
  internal-network:
    internal: true
  outside-world:

Dockerfile

FROM python:3.7-buster
ARG USERNAME=developer
# On Linux, replace with your actual UID, GID if not the default 1000
ARG USER_UID=1000
ARG USER_GID=$USER_UID

RUN echo "Starting Build" \
  && groupadd --gid $USER_GID $USERNAME \
  && useradd --uid $USER_UID --gid $USER_GID -m $USERNAME \
  && mkdir -p /home/$USERNAME/.vscode-server /home/$USERNAME/.vscode-server-insiders \
  && chown ${USER_UID}:${USER_GID} /home/$USERNAME/.vscode-server* \
  # Install node prereqs
  # Ref: https://deb.nodesource.com/setup_12.x
  && echo "deb https://deb.nodesource.com/node_12.x buster main" > /etc/apt/sources.list.d/nodesource.list \
  && wget -qO- https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add - \
  && apt-get update \
  && apt-get install -yqq nodejs sudo zsh locales fonts-powerline \
  && pip install -U pip && pip install pipenv \
  && npm i -g npm@^6 \
  && rm -rf /var/lib/apt/lists/* \
  && locale-gen en_US.UTF-8 \
  # Add sudo support
  && usermod -aG sudo $USERNAME \
  && echo "$USERNAME     ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers \
  # ZSH
  && wget https://github.com/robbyrussell/oh-my-zsh/raw/master/tools/install.sh -O - | zsh || true

USER $USERNAME

ENV TERM xterm
ENV ZSH_THEME agnoster

WORKDIR /home/developer/espresso

ENTRYPOINT ["/bin/zsh"]