FROM ruby:3.3.8-alpine3.22 RUN apk update && apk upgrade RUN apk --no-cache --update add build-base ruby ruby-dev sqlite sqlite-libs sqlite-dev gcompat \ && gem install etc --no-document \ && gem install json --no-document \ && gem install sqlite3 --version="~> 1.3" --no-document --platform ruby \ && gem install mailcatcher:0.10.0 --no-document \ && apk del --rdepends --purge build-base EXPOSE 1025 1080 ENTRYPOINT ["mailcatcher"] CMD ["--foreground", "--ip", "0.0.0.0"]