Merge pull request #27 from redhat-scholars/image-management

Add image help command

Author: kdubois

documentation/modules/ROOT/pages/imagemanagement.adoc

@@ -66,16 +66,6 @@ registry.access.redhat.com/ubi9/openjdk-21-runtime 1.18-4        80786be7434f
 
 Your image is the `my-image` and the `registry.access.redhat.com/ubi9/openjdk-21` is the image used to build yours.
 
-== Removing images
-
-To remove your just created image:
-
-[.console-input]
-[source,bash,subs="+macros,+attributes"]
-----
-docker image rm my-image
-----
-
 == Exploring the Desktop interface
 
 Let's take a look at image management in the Desktop interfaces.
@@ -90,3 +80,62 @@ image::podman-desktop-images.png[alt="Podman Desktop Images tab", align="center"
 We can see information about the image layers, and low-level information about the image in JSON format.
 
 image::podman-desktop-image-info.png[alt="Podman Desktop Image Info tab", align="center"]
+
+
+For now though, let's stick to the terminal and get a little more comfortable with the command line instructions. 
+
+== Managing images
+
+The Podman or Docker CLI offer many ways to manage container images. You can find out more by issuing the following help command: 
+
+[.console-input]
+[source,bash,subs="+macros,+attributes"]
+----
+docker image -h
+----
+
+[.console-output]
+[source,text]
+----
+Manage images
+
+Description:
+  Manage images
+
+Usage:
+  podman image [command]
+
+Available Commands:
+  build       Build an image using instructions from Containerfiles
+  diff        Inspect changes to the image's file systems
+  exists      Check if an image exists in local storage
+  history     Show history of a specified image
+  import      Import a tarball to create a filesystem image
+  inspect     Display the configuration of an image
+  list        List images in local storage
+  load        Load image(s) from a tar archive
+  mount       Mount an image's root filesystem
+  prune       Remove unused images
+  pull        Pull an image from a registry
+  push        Push an image to a specified destination
+  rm          Remove one or more images from local storage
+  save        Save image(s) to an archive
+  scp         Securely copy images
+  search      Search registry for image
+  sign        Sign an image
+  tag         Add an additional name to a local image
+  tree        Print layer hierarchy of an image in a tree format
+  trust       Manage container image trust policy
+  unmount     Unmount an image's root filesystem
+  untag       Remove a name from a local image
+----
+
+Let's try to remove your just created image:
+
+[.console-input]
+[source,bash,subs="+macros,+attributes"]
+----
+docker image rm my-image
+----
+
+Great! You're well on your way to becoming a Container Image expert :)