chore: update help doc with OCI layout support

cmd/oras/root/attach.go

@@ -72,7 +72,7 @@ Example - Attach file 'hi.txt' and add manifest annotations:
 Example - Attach file 'hi.txt' and export the pushed manifest to 'manifest.json':
   oras attach --artifact-type doc/example --export-manifest manifest.json localhost:5000/hello:v1 hi.txt
 
-Example - Attach file to the manifest tagged 'v1' in an OCI layout folder 'layout-dir':
+Example - Attach file to the manifest tagged 'v1' in an OCI image layout folder 'layout-dir':
   oras attach --oci-layout --artifact-type doc/example layout-dir:v1 hi.txt
   `,
 		Args: cobra.MinimumNArgs(1),

cmd/oras/root/blob/fetch.go

@@ -45,8 +45,8 @@ func fetchCmd() *cobra.Command {
 	var opts fetchBlobOptions
 	cmd := &cobra.Command{
 		Use:   "fetch [flags] {--output <file> | --descriptor} <name>@<digest>",
-		Short: "Fetch a blob from a remote registry",
-		Long: `Fetch a blob from a remote registry
+		Short: "Fetch a blob from a registry or an OCI image layout",
+		Long: `Fetch a blob from a registry or an OCI image layout
 
 Example - Fetch a blob from registry and save it to a local file:
   oras blob fetch --output blob.tar.gz localhost:5000/hello@sha256:9a201d228ebd966211f7d1131be19f152be428bd373a92071c71d8deaf83b3e5

cmd/oras/root/blob/push.go

@@ -43,8 +43,8 @@ func pushCmd() *cobra.Command {
 	var opts pushBlobOptions
 	cmd := &cobra.Command{
 		Use:   "push [flags] <name>[@digest] <file>",
-		Short: "Push a blob to a remote registry",
-		Long: `Push a blob to a remote registry
+		Short: "Push a blob to a registry or an OCI image layout",
+		Long: `Push a blob to a registry or an OCI image layout
 
 Example - Push blob 'hi.txt' to a registry:
   oras blob push localhost:5000/hello hi.txt
@@ -67,7 +67,7 @@ Example - Push blob 'hi.txt' and output the prettified descriptor:
 Example - Push blob without TLS:
   oras blob push --insecure localhost:5000/hello hi.txt
 
-Example - Push blob 'hi.txt' into an OCI layout folder 'layout-dir':
+Example - Push blob 'hi.txt' into an OCI image layout folder 'layout-dir':
   oras blob push --oci-layout layout-dir hi.txt
 `,
 		Args: cobra.ExactArgs(2),

cmd/oras/root/cp.go

@@ -51,10 +51,10 @@ func copyCmd() *cobra.Command {
 Example - Copy an artifact between registries:
   oras cp localhost:5000/net-monitor:v1 localhost:6000/net-monitor-copy:v1
 
-Example - Download an artifact into an OCI layout folder:
+Example - Download an artifact into an OCI image layout folder:
   oras cp --to-oci-layout localhost:5000/net-monitor:v1 ./downloaded:v1
 
-Example - Upload an artifact from an OCI layout folder:
+Example - Upload an artifact from an OCI image layout folder:
   oras cp --from-oci-layout ./to-upload:v1 localhost:5000/net-monitor:v1
 
 Example - Upload an artifact from an OCI layout tar archive:

cmd/oras/root/discover.go

@@ -46,8 +46,8 @@ func discoverCmd() *cobra.Command {
 	var opts discoverOptions
 	cmd := &cobra.Command{
 		Use:   "discover [flags] <name>{:<tag>|@<digest>}",
-		Short: "[Preview] Discover referrers of a manifest in the remote registry",
-		Long: `[Preview] Discover referrers of a manifest in the remote registry
+		Short: "[Preview] Discover referrers of a manifest in a registry or an OCI image layout",
+		Long: `[Preview] Discover referrers of a manifest in a registry or an OCI image layout
 
 ** This command is in preview and under development. **
 
@@ -69,7 +69,7 @@ Example - Discover all the referrers of manifest with annotations, displayed in
 Example - Discover referrers with type 'test-artifact' of manifest 'hello:v1' in registry 'localhost:5000':
   oras discover --artifact-type test-artifact localhost:5000/hello:v1
 
-Example - Discover referrers of the manifest tagged 'v1' in an OCI layout folder 'layout-dir':
+Example - Discover referrers of the manifest tagged 'v1' in an OCI image layout folder 'layout-dir':
   oras discover --oci-layout layout-dir:v1
   oras discover --oci-layout -v -o tree layout-dir:v1
 `,

cmd/oras/root/manifest/fetch.go

@@ -63,7 +63,7 @@ Example - Fetch manifest from a registry with certain platform:
 Example - Fetch manifest from a registry with prettified json result:
   oras manifest fetch --pretty localhost:5000/hello:v1
 
-Example - Fetch raw manifest from an OCI layout folder 'layout-dir':
+Example - Fetch raw manifest from an OCI image layout folder 'layout-dir':
   oras manifest fetch --oci-layout layout-dir:v1
 
 Example - Fetch raw manifest from an OCI layout archive file 'layout.tar':

cmd/oras/root/manifest/fetch_config.go

@@ -46,8 +46,8 @@ func fetchConfigCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "fetch-config [flags] <name>{:<tag>|@<digest>}",
 		Aliases: []string{"get-config"},
-		Short:   "Fetch the config of a manifest from a remote registry",
-		Long: `Fetch the config of a manifest from a remote registry
+		Short:   "Fetch the config of a manifest from a registry or an OCI image layout",
+		Long: `Fetch the config of a manifest from a registry or an OCI image layout
 
 Example - Fetch the config:
   oras manifest fetch-config localhost:5000/hello:v1

cmd/oras/root/manifest/push.go

@@ -49,8 +49,8 @@ func pushCmd() *cobra.Command {
 	var opts pushOptions
 	cmd := &cobra.Command{
 		Use:   "push [flags] <name>[:<tag>[,<tag>][...]|@<digest>] <file>",
-		Short: "Push a manifest to remote registry",
-		Long: `Push a manifest to remote registry
+		Short: "Push a manifest to a registry or an OCI image layout",
+		Long: `Push a manifest to a registry or an OCI image layout
 
 Example - Push a manifest to repository 'localhost:5000/hello' and tag with 'v1':
   oras manifest push localhost:5000/hello:v1 manifest.json
@@ -77,7 +77,7 @@ Example - Push a manifest to repository 'localhost:5000/hello' and tag with 'tag
 Example - Push a manifest to repository 'localhost:5000/hello' and tag with 'tag1', 'tag2', 'tag3' and concurrency level tuned:
   oras manifest push --concurrency 6 localhost:5000/hello:tag1,tag2,tag3 manifest.json
 
-Example - Push a manifest to an OCI layout folder 'layout-dir' and tag with 'v1':
+Example - Push a manifest to an OCI image layout folder 'layout-dir' and tag with 'v1':
   oras manifest push --oci-layout layout-dir:v1 manifest.json
 `,
 		Args: cobra.ExactArgs(2),

cmd/oras/root/pull.go

@@ -51,8 +51,8 @@ func pullCmd() *cobra.Command {
 	var opts pullOptions
 	cmd := &cobra.Command{
 		Use:   "pull [flags] <name>{:<tag>|@<digest>}",
-		Short: "Pull files from remote registry",
-		Long: `Pull files from remote registry
+		Short: "Pull files from a registry or an OCI image layout",
+		Long: `Pull files from a registry or an OCI image layout
 
 Example - Pull artifact files from a registry:
   oras pull localhost:5000/hello:v1
@@ -76,7 +76,7 @@ Example - Pull files from a registry with certain platform:
 Example - Pull all files with concurrency level tuned:
   oras pull --concurrency 6 localhost:5000/hello:v1
 
-Example - Pull artifact files from an OCI layout folder 'layout-dir':
+Example - Pull artifact files from an OCI image layout folder 'layout-dir':
   oras pull --oci-layout layout-dir:v1
 
 Example - Pull artifact files from an OCI layout archive 'layout.tar':

cmd/oras/root/push.go

@@ -48,8 +48,8 @@ func pushCmd() *cobra.Command {
 	var opts pushOptions
 	cmd := &cobra.Command{
 		Use:   "push [flags] <name>[:<tag>[,<tag>][...]] <file>[:<type>] [...]",
-		Short: "Push files to remote registry",
-		Long: `Push files to remote registry
+		Short: "Push files to a registry or an OCI image layout",
+		Long: `Push files to a registry or an OCI image layout
 
 Example - Push file "hi.txt" with media type "application/vnd.oci.image.layer.v1.tar" (default):
   oras push localhost:5000/hello:v1 hi.txt
@@ -91,7 +91,7 @@ Example - Push file "hi.txt" with multiple tags:
 Example - Push file "hi.txt" with multiple tags and concurrency level tuned:
   oras push --concurrency 6 localhost:5000/hello:tag1,tag2,tag3 hi.txt
 
-Example - Push file "hi.txt" into an OCI layout folder 'layout-dir' with tag 'test':
+Example - Push file "hi.txt" into an OCI image layout folder 'layout-dir' with tag 'test':
   oras push --oci-layout layout-dir:test hi.txt
 `,
 		Args: cobra.MinimumNArgs(1),

cmd/oras/root/repo/tags.go

@@ -49,7 +49,7 @@ Example - Show tags in the target repository with digest-like tags hidden:
 Example - Show tags of the target repository that include values lexically after last:
   oras repo tags --last "last_tag" localhost:5000/hello
 
-Example - Show tags of the target OCI layout folder 'layout-dir':
+Example - Show tags of the target OCI image layout folder 'layout-dir':
   oras repo tags --oci-layout layout-dir
 
 Example - Show tags of the target OCI layout archive 'layout.tar':

cmd/oras/root/tag.go

@@ -37,8 +37,8 @@ func tagCmd() *cobra.Command {
 	var opts tagOptions
 	cmd := &cobra.Command{
 		Use:   "tag [flags] <name>{:<tag>|@<digest>} <new_tag> [...]",
-		Short: "Tag a manifest in the remote registry",
-		Long: `Tag a manifest in the remote registry
+		Short: "Tag a manifest in a registry or an OCI image layout",
+		Long: `Tag a manifest in a registry or an OCI image layout
 
 Example - Tag the manifest 'v1.0.1' in 'localhost:5000/hello' to 'v1.0.2':
   oras tag localhost:5000/hello:v1.0.1 v1.0.2
@@ -52,7 +52,7 @@ Example - Tag the manifest 'v1.0.1' in 'localhost:5000/hello' to 'v1.0.2', 'late
 Example - Tag the manifest 'v1.0.1' in 'localhost:5000/hello' to 'v1.0.1', 'v1.0.2', 'latest' with concurrency level tuned:
   oras tag --concurrency 1 localhost:5000/hello:v1.0.1 v1.0.2 latest
 
-Example - Tag the manifest 'v1.0.1' to 'v1.0.2' in an OCI layout folder 'layout-dir':
+Example - Tag the manifest 'v1.0.1' to 'v1.0.2' in an OCI image layout folder 'layout-dir':
   oras tag layout-dir:v1.0.1 v1.0.2
 `,
 		Args: cobra.MinimumNArgs(2),