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    Bug 
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    Resolution: Won't Do
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    Blocker 
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    CentOS 7.8 using podman-1.6.4-18.el7_8.x86_64
 Plugin version: Docker Pipeline 1.23
Hi developers,
we use podman with the docker emulation instant of native docker.
The pull of the image works, but the start of the container fails with:
Posting build status of FAILED to Git for commit id [c0fd73dba1f80622cff871baae31fc04ed6af5b9] and ref 'refs/heads/master' ERROR: The docker version is less than v1.7. Pipeline functions requiring 'docker exec' (e.g. 'docker.inside') or SELinux labeling will not work. Finished: FAILURE
But this version contains the needed command:
docker exec --help
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Run a process in a running containerDescription:
  Execute the specified command inside a running container.
Usage:
  podman exec [flags] CONTAINER [COMMAND [ARG...]]Examples:
  podman exec -it ctrID ls
  podman exec -it -w /tmp myCtr pwd
  podman exec --user root ctrID lsFlags:
      --detach-keys string   Override the key sequence for detaching a container. Format is a single character [a-Z] or ctrl-<value> where <value> is one of: a-z, @, ^, [, , or _
  -e, --env stringArray      Set environment variables
  -i, --interactive          Keep STDIN open even if not attached
  -l, --latest               Act on the latest container podman is aware of
      --preserve-fds int     Pass N additional file descriptors to the container
      --privileged           Give the process extended Linux capabilities inside the container.  The default is false
  -t, --tty                  Allocate a pseudo-TTY. The default is false
  -u, --user string          Sets the username or UID used and optionally the groupname or GID for the specified command
  -w, --workdir string       Working directory inside the container