Может замонтировать папку или почитать про вольюмы?
дак он сам монтирует
"Mounts": [
{
"Type": "volume",
"Name": "c8257d0484e981daf2f65adfc2a209cacec6e47c9a731b941188199c785d372d",
"Source": "/var/lib/docker/volumes/c8257d0484e981daf2f65adfc2a209cacec6e47c9a731b941188199c785d372d/_data",
"Destination": "/var/lib/mysql",
"Driver": "local",
"Mode": "",
"RW": true,
"Propagation": ""
},
{
"Type": "bind",
"Source": "/home/spatnehochu/dev/nalogi/configs/mysql/data",
"Destination": "/docker-entrypoint-initdb.d",
"Mode": "rw",
"RW": true,
"Propagation": "rprivate"
}
],