# Multistage build to reduce image size and increase security FROM node:lts-slim AS build # Create folder for CryptPad RUN mkdir /cryptpad WORKDIR /cryptpad # Copy CryptPad source code to the container COPY . /cryptpad RUN sed -i "s@//httpAddress: '::'@httpAddress: '0.0.0.0'@" /cryptpad/config/config.example.js RUN sed -i "s@installMethod: 'unspecified'@installMethod: 'docker'@" /cryptpad/config/config.example.js # Install dependencies RUN npm install --production \ && npm run install:components # Create actual CryptPad image FROM node:lts-slim # Create user and group for CryptPad so it does not run as root RUN groupadd cryptpad -g 4001 RUN useradd cryptpad -u 4001 -g 4001 -d /cryptpad # Copy cryptpad with installed modules COPY --from=build --chown=cryptpad /cryptpad /cryptpad USER cryptpad # Copy docker-entrypoint.sh script COPY --chown=cryptpad docker-entrypoint.sh /cryptpad/docker-entrypoint.sh # Set workdir to cryptpad WORKDIR /cryptpad # Create directories RUN mkdir blob block customize data datastore # Volumes for data persistence VOLUME /cryptpad/blob VOLUME /cryptpad/block VOLUME /cryptpad/customize VOLUME /cryptpad/data VOLUME /cryptpad/datastore ENTRYPOINT ["/bin/bash", "/cryptpad/docker-entrypoint.sh"] # Ports EXPOSE 3000 3001 3003 # Run cryptpad on startup CMD ["npm", "start"]