cryptpad/Dockerfile

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Docker
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# Multistage build to reduce image size and increase security
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FROM node:lts-slim AS build
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# Create folder for CryptPad
RUN mkdir /cryptpad
WORKDIR /cryptpad
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# Copy CryptPad source code to the container
COPY . /cryptpad
RUN sed -i "s@//httpAddress: '::'@httpAddress: '0.0.0.0'@" /cryptpad/config/config.example.js
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RUN sed -i "s@installMethod: 'unspecified'@installMethod: 'docker'@" /cryptpad/config/config.example.js
# Install dependencies
RUN npm install --production \
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&& npm run install:components
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# Create actual CryptPad image
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FROM node:lts-slim
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# Create user and group for CryptPad so it does not run as root
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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
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# Copy docker-entrypoint.sh script
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COPY --chown=cryptpad docker-entrypoint.sh /cryptpad/docker-entrypoint.sh
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# 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
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ENTRYPOINT ["/bin/bash", "/cryptpad/docker-entrypoint.sh"]
# Ports
EXPOSE 3000 3001
# Run cryptpad on startup
CMD ["npm", "start"]