[pica-etherpad-db] Init

pica-etherpad-db/Dockerfile

+FROM mysql:8
+
+COPY config/limit_binary_log.cnf /etc/mysql/conf.d/limit_binary_log.cnf

pica-etherpad-db/README.md

+This image limits the [mysql binary log](https://dev.mysql.com/doc/refman/8.0/en/binary-log.html) to 30 hours (=108000 seconds) via the [binlog_expire_logs_seconds](https://dev.mysql.com/doc/refman/8.0/en/replication-options-binary-log.html#sysvar_binlog_expire_logs_seconds) variable.

pica-etherpad-db/clair-whitelist.yml

+generalwhitelist:

pica-etherpad-db/config/limit_binary_log.cnf

+[mysqld]
+binlog_expire_logs_seconds = 108000