add podman container|image exists

Add an exists subcommand to podman container and podman image that allows
users to verify the existence of a container or image by ID or name.  The return
code can be 0 (success), 1 (failed to find), or 125 (failed to work with runtime).

Issue #1845

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/completions/bash/podman b/completions/bash/podman
index 8eaa1e6a9..3c6b6ec50 100644
--- a/completions/bash/podman
+++ b/completions/bash/podman
@@ -2178,6 +2178,22 @@ _podman_container_runlabel() {
     esac
 }
 
+_podman_container_exists() {
+    local options_with_args="
+    "
+
+    local boolean_options="
+  "
+}
+
+_podman_image_exists() {
+    local options_with_args="
+    "
+
+    local boolean_options="
+  "
+}
+
 _podman_pod_create() {
   local options_with_args="
       --cgroup-parent