update references

Signed-off-by: Shiwei Zhang <shizh@microsoft.com>

cmd/oras/discover.go

@@ -103,7 +103,7 @@ func printDiscoveredReferences(desc ocispec.Descriptor, refs []remotes.Discovere
 	}
 	output := struct {
 		Digest     digest.Digest `json:"digest"`
-		References []reference   `json:"links"`
+		References []reference   `json:"references"`
 	}{
 		Digest:     desc.Digest,
 		References: make([]reference, len(refs)),

docs/artifact-manifest.md

@@ -200,7 +200,7 @@ Pulling an artifact is the same as the regular `oras pull`. This example
         oras discover \
           --output-json \
           --artifact-type application/x.example.signature.v0 \
-          localhost:5000/hello-world:latest | jq -r .links[0].digest)
+          localhost:5000/hello-world:latest | jq -r .references[0].digest)
   ```
 
 - Generates output:

go.mod

@@ -5,7 +5,7 @@ go 1.16
 replace (
 	// WARNING! Do NOT replace these without also replacing their lines in the `require` stanza below.
 	// These `replace` stanzas are IGNORED when this is imported as a library
-	github.com/containerd/containerd => github.com/notaryproject/containerd v1.5.0-beta.4.0.20210401070753-d219eb99ca3b
+	github.com/containerd/containerd => github.com/shizhMSFT/containerd v1.2.1-0.20210408082833-9fda821b6398
 	github.com/docker/distribution => github.com/docker/distribution v0.0.0-20191216044856-a8371794149d
 	github.com/docker/docker => github.com/moby/moby v17.12.0-ce-rc1.0.20200618181300-9dc6525e6118+incompatible
 	github.com/opencontainers/artifacts => github.com/aviral26/artifacts v0.0.0-20210331072334-fac4f3a4da4e

go.sum

@@ -372,8 +372,6 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8m
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f/go.mod h1:ZdcZmHo+o7JKHSa8/e818NopupXU1YMK5fe1lsApnBw=
 github.com/ncw/swift v1.0.47/go.mod h1:23YIA4yWVnGwv2dQlN4bB7egfYX6YLn0Yo/S6zZO/ZM=
-github.com/notaryproject/containerd v1.5.0-beta.4.0.20210401070753-d219eb99ca3b h1:DNxwQqcOtj4Wrbnj6tFbMJcGNojeOiZYHUQVAfqjHZc=
-github.com/notaryproject/containerd v1.5.0-beta.4.0.20210401070753-d219eb99ca3b/go.mod h1:rkfsydnYZBb6tU7iTyyTvQcoMXezKdDmX7+lEE1SyUg=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
 github.com/olekukonko/tablewriter v0.0.0-20170122224234-a0225b3f23b5/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
 github.com/onsi/ginkgo v0.0.0-20151202141238-7f8ab55aaf3b/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@@ -448,6 +446,8 @@ github.com/safchain/ethtool v0.0.0-20190326074333-42ed695e3de8/go.mod h1:Z0q5wiB
 github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
 github.com/sean-/seed v0.0.0-20170313163322-e2103e2c3529/go.mod h1:DxrIzT+xaE7yg65j358z/aeFdxmN0P9QXhEzd20vsDc=
 github.com/seccomp/libseccomp-golang v0.9.1/go.mod h1:GbW5+tmTXfcxTToHLXlScSlAvWlF4P2Ca7zGrPiEpWo=
+github.com/shizhMSFT/containerd v1.2.1-0.20210408082833-9fda821b6398 h1:DjG1EF2zRz+0gY5uDXFT/vXcUx5dd41eIa40Vt0AyfA=
+github.com/shizhMSFT/containerd v1.2.1-0.20210408082833-9fda821b6398/go.mod h1:rkfsydnYZBb6tU7iTyyTvQcoMXezKdDmX7+lEE1SyUg=
 github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 github.com/sirupsen/logrus v1.0.6/go.mod h1:pMByvHTf9Beacp5x1UXfOR9xyW/9antXMhjMPG0dEzc=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=