when try to use docker.image(), it will find the container id first. However, the current method getContainerIdIfContainerized() can not parse the container id because the return message of /proc/1/moutninfo is different. Please refer to the following.

cat /proc/1/mountinfo | grep /hostname

1339 1333 0:48 /containers/overlay-containers/4c4d5c5475f78f2b8a98e2894adcc3152ac587ac3c406a5c4eb74cc3f129c03c/userdata/hostname /etc/hostname rw,nosuid,nodev,relatime - tmpfs tmpfs rw,seclabel,size=1609596k,mode=700,uid=1001,gid=1001

Reproduction steps

1. run a docker container in a podman container, on REHL8.
2. go to the docker conainer
3. run command: cat /proc/1/mountinfo | grep /hostname
4. check the string which contains the contianer id.

Expected Results

the current code uses regexp "/containers/([a-z0-9]{64})/hostname" to parse the container id, so it expects /containers/[id]/hostname.

Actual Results

1339 1333 0:48 /containers/overlay-containers/4c4d5c5475f78f2b8a98e2894adcc3152ac587ac3c406a5c4eb74cc3f129c03c/userdata/hostname /etc/hostname rw,nosuid,nodev,relatime - tmpfs tmpfs rw,seclabel,size=1609596k,mode=700,uid=1001,gid=1001