Terminal "command not found"

[hsmptg]

I installed code-server in a Oracle Cloud VM using the linuxserver/code-server docker image with the following docker-compose.yml:

version: "2.1"
services:
  codeserver:
    image: lscr.io/linuxserver/code-server:latest
    container_name: codeserver
    environment:
      - PUID=1001
      - PGID=1001
      - TZ=Europe/Lisbon
      - PASSWORD=myPassword
    volumes:
      - /home/ubuntu/docker/codeserver/config:/config
    ports:
      - 8443:8443
    restart: unless-stopped

All works great but when I open a terminal, not every commands work like in the VM cli.
For instance if a do a 'ls', I get the folder listed as expected:

abc@39d7ad9acdd6:~/workspace$ ls
testcode.py

But if I do a ping I get an error:

abc@39d7ad9acdd6:~/workspace$ ping
bash: ping: command not found

Note that I don't get that error if I execute the exact same command in the host cli:

ubuntu@myubuntu:~/docker/codeserver/config/workspace$ ls
testcode.py
ubuntu@myubuntu:~/docker/codeserver/config/workspace$ ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=120 time=1.15 ms

I wonder if is a question of permissions since the terminal in code-server shows an abc user that I do not know where it came from?!?
Regards

[jsjoeio]

Hmm...I'm not sure to be honest. Maybe @code-asher has an idea?

[code-asher]

Maybe the linuxserver/code-server image does not include ping.

[code-asher]

I am pretty sure our image does though.

[hsmptg]

I just check that inside code-server terminal some executables are missing.

Here an example in the code-server terminal:

abc@39d7ad9acdd6:~/workspace$ ls /usr/bin/pin* -la
lrwxrwxrwx 1 root root    26 Oct  4 06:34 /usr/bin/pinentry -> /etc/alternatives/pinentry
-rwxr-xr-x 1 root root 51656 Mar 24  2022 /usr/bin/pinentry-curses
-rwxr-xr-x 1 root root 31040 Feb  7  2022 /usr/bin/pinky

And now using the VM cli (where docker is running):

ubuntu@myubuntu:~$ ls /usr/bin/pin* -la
lrwxrwxrwx 1 root root    26 Aug 10 12:33 /usr/bin/pinentry -> /etc/alternatives/pinentry
-rwxr-xr-x 1 root root 51656 Mar 24  2022 /usr/bin/pinentry-curses
-rwxr-xr-x 1 root root 63952 Mar 24  2022 /usr/bin/pinentry-gnome3
lrwxrwxrwx 1 root root    30 Sep 18 09:26 /usr/bin/pinentry-x11 -> /etc/alternatives/pinentry-x11
-rwxr-xr-x 1 root root 72344 Feb  5  2022 /usr/bin/ping
lrwxrwxrwx 1 root root     4 Feb  5  2022 /usr/bin/ping4 -> ping
lrwxrwxrwx 1 root root     4 Feb  5  2022 /usr/bin/ping6 -> ping
-rwxr-xr-x 1 root root 31040 Feb  7  2022 /usr/bin/pinky

No wonder code-server terminal do not find the ping command.
But the question is WHY the docker code-server container do not see the same file system?
I suspect that this issue is something related with docker and not with code-server by itself but maybe someone can give me an hint!
Thanks

[jsjoeio]

Nice find! That is unusually. Maybe it's not mounting the right volume? Hmm I'm not totally sure.

[code-asher]

The host and Docker container are separate. The linuxserver/code-server image probably has different packages installed from the host machine.

[code-asher]

One option is to use the official codercom/code-server image where I think we have a lot more tools installed.

Another option is to create your own Docker image based off linuxserver/code-server and add the tools you want in it.