Dockerfile

FROM node:20-bullseye

MAINTAINER James Spurin <james@spurin.com>

# Set the server port as an environmental
ENV HEXO_SERVER_PORT=4000

# Set the git username and email
ENV GIT_USER="Joe Bloggs"
ENV GIT_EMAIL="joe@bloggs.com"

# Install requirements
RUN \
 apt-get update && \
 apt-get install git -y && \
 npm install -g hexo-cli

# Set workdir
WORKDIR /app

# Expose Server Port
EXPOSE ${HEXO_SERVER_PORT}

# Build a base server and configuration if it doesnt exist, then start
CMD \
  if [ "$(ls -A /app)" ]; then \
    echo "***** App directory exists and has content, continuing *****"; \
  else \
    echo "***** App directory is empty, initialising with hexo and hexo-admin *****" && \
    hexo init && \
    npm install && \
    npm install --save hexo-admin; \
  fi; \
  if [ ! -f /app/requirements.txt ]; then \
    echo "***** App directory contains no requirements.txt file, continuing *****"; \
  else \
    echo "***** App directory contains a requirements.txt file, installing npm requirements *****"; \
    cat /app/requirements.txt | xargs npm --prefer-offline install --save; \
  fi; \
  if [ "$(ls -A /app/.ssh 2>/dev/null)" ]; then \
    echo "***** App .ssh directory exists and has content, continuing *****"; \
  else \
    echo "***** App .ssh directory is empty, initialising ssh key and configuring known_hosts for common git repositories (github/gitlab) *****" && \
    rm -rf ~/.ssh/* && \
    ssh-keygen -t rsa -f ~/.ssh/id_rsa -q -P "" && \
    ssh-keyscan github.com > ~/.ssh/known_hosts 2>/dev/null && \
    ssh-keyscan gitlab.com >> ~/.ssh/known_hosts 2>/dev/null && \
    cp -r ~/.ssh /app; \
  fi; \
  echo "***** Running git config, user = ${GIT_USER}, email = ${GIT_EMAIL} *****" && \
  git config --global user.email ${GIT_EMAIL} && \
  git config --global user.name ${GIT_USER} && \
  echo "***** Copying .ssh from App directory and setting permissions *****" && \
  cp -r /app/.ssh ~/ && \
  chmod 600 ~/.ssh/id_rsa && \
  chmod 600 ~/.ssh/id_rsa.pub && \
  chmod 700 ~/.ssh && \
  echo "***** Contents of public ssh key (for deploy) - *****" && \
  cat ~/.ssh/id_rsa.pub && \
  echo "***** Starting server on port ${HEXO_SERVER_PORT} *****" && \
  hexo server -d -p ${HEXO_SERVER_PORT}