Set volume to docker container from wsl from windows 10 - docker

Question

In my windows i installed docker and ubuntu 18.4 wsl.So after expose daemon on localhost, i can use windows daemon on ubuntu wsl.
I created a directory's on drive d and i made a file into data directory like below:
PS D:\wsl\data> dir
Directory: D:\wsl\data
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 8/31/2019 2:27 PM 0 New Text Document.txt
PS D:\wsl\data>
after that, i run a postgres container like below on wsl teminal:
$ docker run --name=pg-docker3 -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=s123 -v /mnt/d/wsl/data:/var/lib/postgresql/data mdillon/postgis:11-alpine
After creating container i open container by bash :
$ docker exec -it pg-docker3 bash
This is data postgres directory:
bash-4.4# ls /var/lib/postgresql/data
PG_VERSION pg_commit_ts pg_logical pg_serial pg_subtrans pg_xact postmaster.pid
base pg_dynshmem pg_multixact pg_snapshots pg_tblspc postgresql.auto.conf
data pg_hba.conf pg_notify pg_stat pg_twophase postgresql.conf
global pg_ident.conf pg_replslot pg_stat_tmp pg_wal postmaster.opts
bash-4.4#
as you can see data directory construct in location but when i listed thing's inside data directory i can see my text file that created in host machine !!!
I created a directory inside data directory calld kk.
bash-4.4# ls /var/lib/postgresql/data
PG_VERSION pg_commit_ts pg_logical pg_serial pg_subtrans pg_xact postmaster.pid
base pg_dynshmem pg_multixact pg_snapshots pg_tblspc postgresql.auto.conf
data pg_hba.conf pg_notify pg_stat pg_twophase postgresql.conf
global pg_ident.conf pg_replslot pg_stat_tmp pg_wal postmaster.opts
bash-4.4# ls /var/lib/postgresql/data/data/
kk
bash-4.4#
But not create this directory inside host as you can see:
PS D:\wsl\data> dir
Directory: D:\wsl\data
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 8/31/2019 2:27 PM 0 New Text Document.txt
Where is the /var/lib/postgresql/data/data/ ? and why it not appeared in /mnt/d/wsl/data ?

Answer 1

You must move your mounting path from /mnt to /. In this answer there is the following explanation : Can you run Docker natively on the new Windows 10 (Ubuntu) bash userspace?
Volumes
Take care when adding volumes. The path C:\dir will be visible as /mnt/c/dir on WSL and as /c/dir/ by docker engine. You can overcome it permanently:
sudo bash -c "echo -e '[automount] \nroot = /'>/etc/wsl.conf"
You must exit and reload WSL after making the change to wsl.conf so that WSL reads in your changes on launch.
Regards