feat: cache dockerfile images through warmer (#2499)

* feat: cache dockerfile images through warmer

* Fix logical error in conditional statement

* Addressed review feedback

1. Updated help text for the --build-arg flag to indicate it should be used with the dockerfile flag.
2. Updated the documentation to include the optional --build-arg flag.
3. Added unit tests for `ParseDockerfile`, covering scenarios for missing Dockerfile, invalid Dockerfile, single stage Dockerfile, multi-stage Dockerfile and Args Dockerfile

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Co-authored-by: 连奔驰 <benchi.lian@thoughtworks.com>

pkg/config/options.go

@@ -162,4 +162,6 @@ type WarmerOptions struct {
 	CustomPlatform string
 	Images         multiArg
 	Force          bool
+	DockerfilePath string
+	BuildArgs      multiArg
 }