github.com/docker/app@v0.9.1-beta3.0.20210611140623-a48f773ab002/examples/dockercoins/hasher/Dockerfile (about)

     1  FROM ruby:alpine
     2  RUN apk add --update build-base curl
     3  RUN gem install sinatra
     4  RUN gem install thin
     5  ADD hasher.rb /
     6  CMD ["ruby", "hasher.rb"]
     7  EXPOSE 80
     8  HEALTHCHECK \
     9    --interval=1s --timeout=2s --retries=3 --start-period=1s \
    10    CMD curl http://localhost/ || exit 1