Getting an error when trying to pull from an oci registry unauthenticated

[MxNxPx]

Environment

Device and OS: Ubuntu & Mac
App version: Zarf v0.26.2
Kubernetes distro being used: N/A
Other:

Steps to reproduce

1. ensure you are not logged into ghcr.io

# grep ghcr ~/.docker/config.json

2. try to pull a public oci package with zarf

# zarf package pull oci://ghcr.io/defenseunicorns/packages/big-bang-distro-k3d/big-bang-distro-k3d:0.0.1-amd64 --oci-concurrency=15 -l debug

Expected result

it should pull the package same as the oras cli does:

# oras pull ghcr.io/defenseunicorns/packages/big-bang-distro-k3d/big-bang-distro-k3d:0.0.1-amd64

Actual Result

getting this error:

# zarf package pull oci://ghcr.io/defenseunicorns/packages/big-bang-distro-k3d/big-bang-distro-k3d:0.0.1-amd64 --oci-concurrency=15 -l debug

Using config file /root/mpenv/zarf-package-big-bang/k3d/zarf-config.yaml
  DEBUG   2023-05-05T10:07:12-04:00  -  Log level set to debug

Saving log file to /tmp/zarf-2023-05-05-10-07-12-2976797980.log
  DEBUG   2023-05-05T10:07:12-04:00  -  json: unsupported type: func(context.Context, v1.Descriptor) error ERROR marshalling json
  DEBUG   2023-05-05T10:07:12-04:00  -  packager.New()
  DEBUG   2023-05-05T10:07:12-04:00  -  packager.createPaths()
  DEBUG   2023-05-05T10:07:12-04:00  -  Using temp path: '/tmp/zarf-165361633'
  DEBUG   2023-05-05T10:07:12-04:00  -  packager.handleOciPackage()
  DEBUG   2023-05-05T10:07:12-04:00  -  Pulling ghcr.io/defenseunicorns/packages/big-bang-distro-k3d/big-bang-distro-k3d:0.0.1-amd64
  •  Pulling Zarf package from
       ghcr.io/defenseunicorns/packages/big-bang-distro-k3d/big-bang-distro-k3d:0.0.1-amd64
  DEBUG   2023-05-05T10:07:12-04:00  -  Loading docker config file from default config location: /root/.docker
  DEBUG   2023-05-05T10:07:13-04:00  -  HEAD "https://ghcr.io/v2/defenseunicorns/packages/big-bang-distro-k3d/big-bang-distro-k3d/manifests/0.0.1-amd64": GET "https://ghcr.io/token?scope=repository%3Adefenseunicorns%2Fpackages%2Fbig-bang-distro-k3d%2Fbig-bang-distro-k3d%3Apull%2Cpush&service=ghcr.io": response status code 403: denied: requested access to the resource is denied
     ERROR:  Failed to pull package: HEAD
             "https://ghcr.io/v2/defenseunicorns/packages/big-bang-distro-k3d/big-bang-distro-k3d/manifests/0.0.1-amd64":
             GET
             "https://ghcr.io/token?scope=repository%3Adefenseunicorns%2Fpackages%2Fbig-bang-distro-k3d%2Fbig-bang-distro-k3d%3Apull%2Cpush&service=ghcr.io":
             response status code 403: denied: requested access to the resource is denied
  DEBUG   2023-05-05T10:07:13-04:00  -  goroutine 1 [running]:
          runtime/debug.Stack()
          	/opt/hostedtoolcache/go/1.19.8/x64/src/runtime/debug/stack.go:24 +0x65
          github.com/defenseunicorns/zarf/src/pkg/message.Fatal({0x35f2360?, 0xc0009bae40?}, {0xc00113a780, 0x16b})
          	/home/runner/work/zarf/zarf/src/pkg/message/message.go:150 +0x18a
          github.com/defenseunicorns/zarf/src/pkg/message.Fatalf({0x35f2360, 0xc0009bae40}, {0x3bb5f2f?, 0x0?}, {0xc001527d38?, 0x0?, 0x0?})
          	/home/runner/work/zarf/zarf/src/pkg/message/message.go:157 +0x51
          github.com/defenseunicorns/zarf/src/cmd.glob..func20(0x7532420?, {0xc001003140?, 0x1, 0x4})
          	/home/runner/work/zarf/zarf/src/cmd/package.go:245 +0x195
          github.com/spf13/cobra.(*Command).execute(0x7532420, {0xc001003100, 0x4, 0x4})
          	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.7.0/command.go:944 +0x847
          github.com/spf13/cobra.(*Command).ExecuteC(0x7533b20)
          	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.7.0/command.go:1068 +0x3bd
          github.com/spf13/cobra.(*Command).Execute(...)
          	/home/runner/go/pkg/mod/github.com/spf13/cobra@v1.7.0/command.go:992
          github.com/defenseunicorns/zarf/src/cmd.Execute()
          	/home/runner/work/zarf/zarf/src/cmd/root.go:68 +0x25
          main.main()
          	/home/runner/work/zarf/zarf/main.go:23 +0x6f

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