docs: add manifest create command reference

add manifest create command reference.

Signed-off-by: ChengyuZhu6 <[email protected]>

Author: ChengyuZhu6

docs/command-reference.md

@@ -52,6 +52,7 @@ It does not necessarily mean that the corresponding features are missing in cont
   - [:nerd_face: nerdctl image encrypt](#nerd_face-nerdctl-image-encrypt)
   - [:nerd_face: nerdctl image decrypt](#nerd_face-nerdctl-image-decrypt)
 - [Manifest management](#manifest-management)
+  - [:whale: nerdctl manifest create](#whale-nerdctl-manifest-create)
   - [:whale: nerdctl manifest inspect](#whale-nerdctl-manifest-inspect)
 - [Registry](#registry)
   - [:whale: nerdctl login](#whale-nerdctl-login)
@@ -1039,6 +1040,23 @@ Flags:
 
 ## Manifest management
 
+### :whale: nerdctl manifest create
+
+Create a local index/manifest list.
+
+Usage: `nerdctl manifest create [OPTIONS] INDEX/MANIFESTLIST MANIFEST [MANIFEST...]`
+
+Flags:
+
+- `--amend`: Amend the existing index/manifest list
+- `--insecure`: Allow communication with an insecure registry
+
+Example:
+
+```bash
+nerdctl manifest create myapp:latest alpine@sha256:eafc1edb577d2e9b458664a15f23ea1c370214193226069eb22921169fc7e43f
+```
+
 ### :whale: nerdctl manifest inspect
 
 Display the contents of a manifest list or manifest.