FROM node:14-alpine3.13

ARG JSONLINT_VERSION=1.6.3
ENV npm_config_loglevel=silent

WORKDIR /data
RUN \
  apk update && apk upgrade && \
  npm install -g jsonlint@"$JSONLINT_VERSION" && \
	rm -rf ~/.npm

USER node
ENTRYPOINT ["jsonlint"]
CMD ["--help"]