Support podman ps filter regular expressions like in docker CLI

[JeffreyVdb]

/kind bug

Description

To filter a container on it's exact name, the filter name=^postgres$ should work, but it doesn't. When using the filter name=postgres, containers named postgres-exporter and postgres will be returned. That's why this filter can be useful.

Steps to reproduce the issue:

Podman

1. Run in shell: podman run --rm -d --name postgres docker://docker.io/library/postgres:11
2. Run in shell: podman ps --filter name=^postgres$

Describe the results you received:

No output

Describe the results you expected:

CONTAINER ID  IMAGE                          COMMAND               CREATED         STATUS             PORTS  NAMES
446492b47e8a  docker.io/library/postgres:11  docker-entrypoint...  31 seconds ago  Up 31 seconds ago         postgres

Which docker outputs when podman is replaced with docker in steps to reproduce

Output of podman version:

Version:            1.4.0
RemoteAPI Version:  1
Go Version:         go1.12.5
OS/Arch:            linux/amd64

Output of podman info --debug:

debug:
  compiler: gc
  git commit: ""
  go version: go1.12.5
  podman version: 1.4.0
host:
  BuildahVersion: 1.8.3
  Conmon:
    package: podman-1.4.0-2.fc30.x86_64
    path: /usr/libexec/podman/conmon
    version: 'conmon version 0.2.0, commit: 3e5b3b1909019a42c7f5a8d47070f0808bfbb35c'
  Distribution:
    distribution: fedora
    version: "30"
  MemFree: 20706824192
  MemTotal: 33479675904
  OCIRuntime:
    package: containerd.io-1.2.6-3.3.fc30.x86_64
    path: /usr/bin/runc
    version: |-
      runc version 1.0.0-rc8
      commit: 425e105d5a03fabd737a126ad93d62a9eeede87f
      spec: 1.0.1-dev
  SwapFree: 8589930496
  SwapTotal: 8589930496
  arch: amd64
  cpus: 8
  hostname: fedora-jeffrey
  kernel: 5.1.11-300.fc30.x86_64
  os: linux
  rootless: false
  uptime: 2h 33m 2.19s (Approximately 0.08 days)
registries:
  blocked: null
  insecure: null
  search:
  - docker.io
  - registry.fedoraproject.org
  - quay.io
  - registry.access.redhat.com
  - registry.centos.org
store:
  ConfigFile: /etc/containers/storage.conf
  ContainerStore:
    number: 1
  GraphDriverName: overlay
  GraphOptions:
  - overlay.mountopt=nodev,metacopy=on
  GraphRoot: /var/lib/containers/storage
  GraphStatus:
    Backing Filesystem: xfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Using metacopy: "true"
  ImageStore:
    number: 13
  RunRoot: /var/run/containers/storage
  VolumePath: /var/lib/containers/storage/volumes

Additional environment details (AWS, VirtualBox, physical, etc.):

n/a

[guits]

agree, this is really useful.
in the ceph-ansible project, we used to filter containers name this way too.

docker:

-bash-4.2# docker ps -a
CONTAINER ID        IMAGE                                   COMMAND             CREATED             STATUS              PORTS               NAMES
8b250a9b881d        docker.io/ceph/daemon:latest-nautilus   "sleep 10000"       17 minutes ago      Up 17 minutes                           ceph-osd-33
ba755fd63831        docker.io/ceph/daemon:latest-nautilus   "sleep 10000"       17 minutes ago      Up 17 minutes                           ceph-osd-3
-bash-4.2# docker ps -f "name=ceph-osd-3$"
CONTAINER ID        IMAGE                                   COMMAND             CREATED             STATUS              PORTS               NAMES
ba755fd63831        docker.io/ceph/daemon:latest-nautilus   "sleep 10000"       17 minutes ago      Up 17 minutes                           ceph-osd-3
-bash-4.2#

podman:

-bash-4.2# podman ps -a
CONTAINER ID  IMAGE                                  COMMAND               CREATED        STATUS            PORTS  NAMES
6ba3ae865bf4  docker.io/ceph/daemon:latest-nautilus  sleep 10000           2 minutes ago  Up 2 minutes ago         ceph-osd-44
5f550be7e697  docker.io/ceph/daemon:latest-nautilus  sleep 10000           2 minutes ago  Up 2 minutes ago         ceph-osd-4
-bash-4.2# podman ps -f "name=ceph-osd-4$"
-bash-4.2# 

from backward compatibility point of view, this is causing issues.

[rhatdan]

@QiWang19 PTAL and if you don't have time. @ashley-cui PTAL