Merge pull request #1068 from rhatdan/readme

Update README.md

README.md

@@ -19,6 +19,7 @@ Skopeo works with API V2 container image registries such as [docker.io](https://
    For example you can copy images from one registry to another, without requiring privilege.
  * Inspecting a remote image showing its properties including its layers, without requiring you to pull the image to the host.
  * Deleting an image from an image repository.
+ * Syncing an external image repository to an internal registy for air-gapped deployments.
  * When required by the repository, skopeo can pass the appropriate credentials and certificates for authentication.
 
  Skopeo operates on the following image and repository types:
@@ -136,7 +137,7 @@ $ skopeo inspect docker://registry.fedoraproject.org/fedora:latest | jq '.Digest
 
 * Container Storage backends
 
-  -  github.com/containers/storage (Backend for [Podman](https://podman.io), [CRI-O](https://cri-o.io), [Buildah](https://buildah.io) and friends)
+  -  [github.com/containers/storage](https://github.com/containers/storage) (Backend for [Podman](https://podman.io), [CRI-O](https://cri-o.io), [Buildah](https://buildah.io) and friends)
 
   -  Docker daemon storage
 
@@ -154,6 +155,11 @@ $ skopeo copy oci:busybox_ocilayout:latest dir:existingemptydirectory
 $ skopeo delete docker://localhost:5000/imagename:latest
 ```
 
+## Syncing registries
+```console
+$ skopeo sync --src docker --dest dir registry.example.com/busybox /media/usb
+```
+
 ## Authenticating to a registry
 
 #### Private registries with authentication
@@ -189,6 +195,20 @@ Contributing
 
 Please read the [contribution guide](CONTRIBUTING.md) if you want to collaborate in the project.
 
+## Commands
+| Command                                            | Description                                                                                  |
+| -------------------------------------------------- | ---------------------------------------------------------------------------------------------|
+| [skopeo-copy(1)](/docs/skopeo-copy.1.md)           | Copy an image (manifest, filesystem layers, signatures) from one location to another.        |
+| [skopeo-delete(1)](/docs/skopeo-delete.1.md)       | Mark the image-name for later deletion by the registry's garbage collector.                                                                |
+| [skopeo-inspect(1)](/docs/skopeo-inspect.1.md)     | Return  low-level  information about image-name in a registry.                                |
+| [skopeo-list-tags(1)](/docs/skopeo-list-tags.1.md) | Return a list of tags for the transport-specific image repository.                               |
+| [skopeo-login(1)](/docs/skopeo-login.1.md)         | Login to a container registry.                                                               |
+| [skopeo-logout(1)](/docs/skopeo-logout.1.md)       | Logout of a container registry.                                                              |
+| [skopeo-manifest-digest(1)](/docs/skopeo-manifest-digest.1.md)    | Compute a manifest digest for a manifest-file and write it to standard output.   |
+| [skopeo-standalone-sign(1)](/docs/skopeo-standalone-sign.1.md)    | Debugging tool - Publish and sign an image in one step.                                                         |
+| [skopeo-standalone-verify(1)](/docs/skopeo-standalone-verify.1.md)| Verify an image signature.                                                    |
+| [skopeo-sync(1)](/docs/skopeo-sync.1.md)           | Synchronize images between container registries and local directories.                       |
+
 License
 -
 skopeo is licensed under the Apache License, Version 2.0. See

docs/skopeo-delete.1.md

@@ -1,7 +1,7 @@
 % skopeo-delete(1)
 
 ## NAME
-skopeo\-delete - Mark _image-name_ for deletion.
+skopeo\-delete - Mark the _image-name_ for later deletion by the registry's garbage collector.
 
 ## SYNOPSIS
 **skopeo delete** _image-name_

docs/skopeo-inspect.1.md

@@ -1,7 +1,7 @@
 % skopeo-inspect(1)
 
 ## NAME
-skopeo\-inspect - Return low-level information about _image-name_ in a registry
+skopeo\-inspect - Return low-level information about _image-name_ in a registry.
 
 ## SYNOPSIS
 **skopeo inspect** [**--raw**] [**--config**] _image-name_

docs/skopeo-list-tags.1.md

@@ -1,7 +1,7 @@
 % skopeo-list-tags(1)
 
 ## NAME
-skopeo\-list\-tags - Return a list of tags the transport-specific image repository
+skopeo\-list\-tags - Return a list of tags for the transport-specific image repository.
 
 ## SYNOPSIS
 **skopeo list-tags** _repository-name_

docs/skopeo-login.1.md

@@ -1,7 +1,7 @@
 % skopeo-login(1)
 
 ## NAME
-skopeo\-login - Login to a container registry
+skopeo\-login - Login to a container registry.
 
 ## SYNOPSIS
 **skopeo login** [*options*] *registry*

docs/skopeo-logout.1.md

@@ -1,7 +1,7 @@
 % skopeo-logout(1)
 
 ## NAME
-skopeo\-logout - Logout of a container registry
+skopeo\-logout - Logout of a container registry.
 
 ## SYNOPSIS
 **skopeo logout** [*options*] *registry*

docs/skopeo-manifest-digest.1.md

@@ -1,7 +1,7 @@
 % skopeo-manifest-digest(1)
 
 ## NAME
-skopeo\-manifest\-digest -Compute a manifest digest of manifest-file and write it to standard output.
+skopeo\-manifest\-digest - Compute a manifest digest for a manifest-file and write it to standard output.
 
 ## SYNOPSIS
 **skopeo manifest-digest** _manifest-file_

docs/skopeo-standalone-sign.1.md

@@ -1,7 +1,7 @@
 % skopeo-standalone-sign(1)
 
 ## NAME
-skopeo\-standalone-sign - Simple Sign an image
+skopeo\-standalone-sign - Debugging tool - Publish and sign an image in one step.
 
 ## SYNOPSIS
 **skopeo standalone-sign** _manifest docker-reference key-fingerprint_ **--output**|**-o** _signature_

docs/skopeo-standalone-verify.1.md

@@ -1,7 +1,7 @@
 % skopeo-standalone-verify(1)
 
 ## NAME
-skopeo\-standalone\-verify - Verify an image signature
+skopeo\-standalone\-verify - Verify an image signature.
 
 ## SYNOPSIS
 **skopeo standalone-verify** _manifest docker-reference key-fingerprint signature_