Original MySQL docker image uses a script to generate ssl certificates for service. Sometime we don't really need it (connect via a docker network link or need a fast enough database service to build a automated test).
We can reduce init time by removing the script from original Docker image
FROM mysql:5.7
# Remove mysql_ssl_rsa_setup to ignore setup SSL certs
RUN rm -f /usr/bin/mysql_ssl_rsa_setup
FAST as a FEATURE !!! 🚀