Allow matching shim path side by side with containerd

Signed-off-by: Justin Terry (VM) <juterry@microsoft.com>

runtime/v2/shim/util.go

@@ -63,7 +63,19 @@ func Command(ctx context.Context, runtime, containerdAddress, path string, cmdAr
 		if cmdPath, lerr = exec.LookPath(name); lerr != nil {
 			if eerr, ok := lerr.(*exec.Error); ok {
 				if eerr.Err == exec.ErrNotFound {
-					return nil, errors.Wrapf(os.ErrNotExist, "runtime %q binary not installed %q", runtime, name)
+					// LookPath only finds current directory matches based on
+					// the callers current directory but the caller is not
+					// likely in the same directory as the containerd
+					// executables. Instead match the calling binaries path
+					// (containerd) and see if they are side by side. If so
+					// execute the shim found there.
+					testPath := filepath.Join(filepath.Dir(self), name)
+					if _, serr := os.Stat(testPath); serr == nil {
+						path = testPath
+					}
+					if path == "" {
+						return nil, errors.Wrapf(os.ErrNotExist, "runtime %q binary not installed %q", runtime, name)
+					}
 				}
 			}
 		}

vendor.conf

@@ -33,7 +33,7 @@ golang.org/x/sync 450f422ab23cf9881c94e2db30cac0eb1b7cf80c
 github.com/BurntSushi/toml a368813c5e648fee92e5f6c30e3944ff9d5e8895
 github.com/grpc-ecosystem/go-grpc-prometheus 6b7015e65d366bf3f19b2b2a000a831940f0f7e0
 github.com/Microsoft/go-winio v0.4.11
-github.com/Microsoft/hcsshim v0.8.4
+github.com/Microsoft/hcsshim v0.8.5
 google.golang.org/genproto d80a6e20e776b0b17a324d0ba1ab50a39c8e8944
 golang.org/x/text 19e51611da83d6be54ddafce4a4af510cb3e9ea4
 github.com/containerd/ttrpc f02858b1457c5ca3aaec3a0803eb0d59f96e41d6