Cross Reference: /external/grpc-grpc/tools/dockerfile/interoptest

`Name`	`Date`	`Size`
Up to higher level directory
`grpc_interop_csharp/`	22-Oct-2020
`grpc_interop_csharpcoreclr/`	22-Oct-2020
`grpc_interop_cxx/`	22-Oct-2020
`grpc_interop_dart/`	22-Oct-2020
`grpc_interop_go/`	22-Oct-2020
`grpc_interop_go1.7/`	22-Oct-2020
`grpc_interop_go1.8/`	22-Oct-2020
`grpc_interop_http2/`	22-Oct-2020
`grpc_interop_java/`	22-Oct-2020
`grpc_interop_java_oracle8/`	22-Oct-2020
`grpc_interop_node/`	22-Oct-2020
`grpc_interop_nodepurejs/`	22-Oct-2020
`grpc_interop_php/`	22-Oct-2020
`grpc_interop_php7/`	22-Oct-2020
`grpc_interop_python/`	22-Oct-2020
`grpc_interop_ruby/`	22-Oct-2020