C:\>mkdir \pg

C:\>cd pg

C:\pg>

C:\pg>docker run -p 5433:5433 -e "POSTGRES_PASSWORD=pgadmin123" -v "c:/pg:/var/lib/postgresql/data" postgres:12.0
The files belonging to this database system will be owned by user "postgres".
This user must also own the server process.

The database cluster will be initialized with locale "en_US.utf8".
The default database encoding has accordingly been set to "UTF8".
The default text search configuration will be set to "english".

Data page checksums are disabled.

fixing permissions on existing directory /var/lib/postgresql/data ... ok
creating subdirectories ... ok
selecting dynamic shared memory implementation ... posix
selecting default max_connections ... 20
selecting default shared_buffers ... 400kB
selecting default time zone ... Etc/UTC
creating configuration files ... ok
running bootstrap script ... 2019-10-10 10:00:11.148 UTC [77] FATAL:  data directory "/var/lib/postgresql/data" has wrong ownership
2019-10-10 10:00:11.148 UTC [77] HINT:  The server must be started by the user that owns the data directory.
child process exited with exit code 1
initdb: removing contents of data directory "/var/lib/postgresql/data"