Docker

Note

# docker build --build-arg USER=ubuntu --build-arg PASSWORD=ubuntu -t ryanc/ubuntu .
# docker run -it --rm -p 2222:22 --user ryanc
# https://code-maven.com/docker-as-regular-user-and-as-root

FROM ubuntu:latest
# Use bash in this dockerfile
SHELL ["/bin/bash", "-c"]

ARG DEBIAN_FRONTEND=noninteractive
ARG USER=${USER:-ubuntu}
ARG PASSWORD=${PASSWORD:-ubuntu}

ENV TZ=Asia/Seoul
ENV USER=${USER}
ENV PASSWORD=${PASSWORD}

RUN apt update && apt install -y sudo less zsh vim git openssh-server curl net-tools &&\
    apt -y autoremove && \
    rm -fr /var/lib/apt/lists/* /tmp/* /var/tmp/*
RUN useradd -u 1000 -m -s /usr/bin/bash $USER && \
    usermod -aG sudo $USER && \
    touch /etc/sudoers && \
    echo "$USER ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers && \
    echo "$USER:$PASSWORD" | chpasswd && \
    mkdir -p /run/sshd && \
    ssh-keygen -A
RUN sed -i 's/#PermitRootLogin/PermitRootLogin no #/g' /etc/ssh/sshd_config && \
    sed -i 's/#PasswordAuthentication/PasswordAuthentication yes #/g' /etc/ssh/sshd_config && \
    sed -i 's/UsePAM yes/#UsePAM yes/g' /etc/ssh/sshd_config

EXPOSE 22

CMD ["/usr/sbin/sshd", "-D"]


# docker compose up -d --build

version: '3.8'
services:
  ubuntu-sshd:
    container_name: ubuntu-sshd
    hostname: ubuntu # hostname seen inside the docker
    build:
      context: .
      dockerfile: Dockerfile
      args:
        - USER=ryanc
        - PASSWORD=ubuntu
    image: ryanc/ubuntu-sshd:latest
    ports:
      - "2222:22"