Dockerfile - docker-images - Various docker image builds I have created over the years.
 (HTM) git clone git://jay.scot/docker-images
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       Dockerfile (459B)
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            1 FROM alpine:latest
            2 MAINTAINER Jay Scott
            3 
            4 RUN apk add --update --no-cache \
            5     ruby \
            6     ruby-dev \
            7     ruby-etc \
            8     ruby-bigdecimal \
            9     build-base \
           10     libstdc++ \
           11     sqlite \
           12     sqlite-dev \
           13     && gem install json --no-document \
           14     && gem install mailcatcher --no-document --prerelease \
           15     && apk del --purge ruby-dev build-base \
           16     && rm -rf /usr/lib/ruby/gems/2.5.0/cache
           17 
           18 EXPOSE 1025
           19 EXPOSE 1080
           20 
           21 CMD ["mailcatcher", "-f", "--ip=0.0.0.0"]