libmysqlclient

Why I wrote this Docker image

Alpine package for mysql (mysql-dev) installs libmysqlclient as a symlink to libmariadb.

docker run -it --rm ruby:alpine sh

apk --no-cache add mysql-dev

ls -la /usr/lib/libmysqlclient.so
lrwxrwxrwx    1 root     root            15 May  8 03:05 /usr/lib/libmysqlclient.so -> libmariadb.so.3

We've got strange SEGFAULT with libmariadb when connecting to AWS RDS reader endpoint. I found the error didn't occur with libmysqlclient. brianmario/mysql2#715 brianmario/mysql2#915

So I needed libmysqlclient itself instead of libmariadb to connect to RDS reader.

Example usage

When installing mysql2 gem on Alpine ruby image.

FROM ruby:alpine

RUN apk --no-cache add \
  build-base \
  libstdc++ \
  openssl-dev

# use libmysqlclient instead of libmariadb to build mysql2 gem
COPY --from=sndbx/libmysqlclient /usr/local/mysql /usr/local/mysql

RUN gem install mysql2