feat(mysql): Add a config file

README.md

@@ -67,13 +67,14 @@ Create ZFS datasets and set permissions as needed.
 
 * Container-specific datasets
     ```
+    zfs create -p 'zpool/data/opt/docker-data/snipeit-'"${COMPOSE_CTX}"'/mysql/config'
     zfs create -p 'zpool/data/opt/docker-data/snipeit-'"${COMPOSE_CTX}"'/mysql/data'
     zfs create -p 'zpool/data/opt/docker-data/snipeit-'"${COMPOSE_CTX}"'/snipeit/data'
     ```
 
 * Change ownership
     ```
-    chown -R 999:999 '/opt/docker-data/snipeit-'"${COMPOSE_CTX}"'/mysql/data'
+    chown -R 999:999 '/opt/docker-data/snipeit-'"${COMPOSE_CTX}"'/mysql/'*
     chown -R 1000:1000 '/opt/docker-data/snipeit-'"${COMPOSE_CTX}"'/snipeit/data'
     ```
 

compose.yaml

@@ -65,6 +65,7 @@ services:
             - ${MYSQL_PORT}:3306
         volumes:
             - /opt/docker-data/snipeit-${CONTEXT}/mysql/data:/var/lib/mysql
+            - /opt/docker-data/snipeit-${CONTEXT}/mysql/config/my.cnf:/etc/mysql/my.cnf
         environment:
             MYSQL_DATABASE: ${MYSQL_DATABASE}
             MYSQL_PASSWORD: ${MYSQL_PASSWORD}