Issue while using docker exec to attach to containers

General
1

Hi,

In my Dockerfile, I have declared a script “start.sh” to be run at ENTRYPOINT.
start.sh looks like this -
#!/bin/bash
export PATH=$PATH:/opt/bin
echo “10.220.2.55 mynode” >> /etc/hosts
useradd -u $UID -m -s /bin/bash $USER
su $USER
/bin/bash

  1. To spin a container I use -
    docker run -it --detach --name=containername -e USER=${USER} -e UID=id -u -e GID=id -g imagename bash
  2. I do a docker start and then attach to the container ‘containername’. Now, when I echo $PATH, I see /opt/bin present in the PATH
  3. I create another session to the same container using docker -exec -u $USER containername bash. Now, when I am inside the container I do not see PATH containing the /opt/bin. I am sure start.sh is running because I can see 10.220.2.55 in /etc/hosts.

What am I missing here? Any help, will be greatly appreciated.

Thanks.