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-# dockerutil
-
-This package is for creating and controlling docker containers for testing
-runsc, gVisor's docker/kubernetes binary. A simple test may look like:
-
-```
- func TestSuperCool(t *testing.T) {
-   ctx := context.Background()
-   c := dockerutil.MakeContainer(ctx, t)
-   got, err := c.Run(ctx, dockerutil.RunOpts{
-     Image: "basic/alpine"
-   }, "echo", "super cool")
-   if err != nil {
-      t.Fatalf("err was not nil: %v", err)
-   }
-   want := "super cool"
-   if !strings.Contains(got, want){
-     t.Fatalf("want: %s, got: %s", want, got)
-   }
- }
-```
-
-For further examples, see many of our end to end tests elsewhere in the repo,
-such as those in //test/e2e or benchmarks at //test/benchmarks.
-
-dockerutil uses the "official" docker golang api, which is
-[very powerful](https://godoc.org/github.com/docker/docker/client). dockerutil
-is a thin wrapper around this API, allowing desired new use cases to be easily
-implemented.
-
-## Profiling
-
-dockerutil is capable of generating profiles. Currently, the only option is to
-use pprof profiles generated by `runsc debug`. The profiler will generate Block,
-CPU, Heap, Goroutine, and Mutex profiles. To generate profiles:
-
-*   Install runsc with the `--profile` flag: `make configure RUNTIME=myrunsc
-    ARGS="--profile"` Also add other flags with ARGS like `--platform=kvm` or
-    `--vfs2`.
-*   Restart docker: `sudo service docker restart`
-
-To run and generate CPU profiles run:
-
-```
-make sudo TARGETS=//path/to:target \
-  ARGS="--runtime=myrunsc -test.v -test.bench=. --pprof-cpu" OPTIONS="-c opt"
-```
-
-Profiles would be at: `/tmp/profile/myrunsc/CONTAINERNAME/cpu.pprof`
-
-Container name in most tests and benchmarks in gVisor is usually the test name
-and some random characters like so:
-`BenchmarkABSL-CleanCache-JF2J2ZYF3U7SL47QAA727CSJI3C4ZAW2`
-
-Profiling requires root as runsc debug inspects running containers in /var/run
-among other things.
-
-### Writing for Profiling
-
-The below shows an example of using profiles with dockerutil.
-
-```
-func TestSuperCool(t *testing.T){
-  ctx := context.Background()
-  // profiled and using runtime from dockerutil.runtime flag
-  profiled := MakeContainer()
-
-  // not profiled and using runtime runc
-  native := MakeNativeContainer()
-
-  err := profiled.Spawn(ctx, RunOpts{
-    Image: "some/image",
-  }, "sleep", "100000")
-  // profiling has begun here
-  ...
-  expensive setup that I don't want to profile.
-  ...
-  profiled.RestartProfiles()
-  // profiled activity
-}
-```
-
-In the above example, `profiled` would be profiled and `native` would not. The
-call to `RestartProfiles()` restarts the clock on profiling. This is useful if
-the main activity being tested is done with `docker exec` or `container.Spawn()`
-followed by one or more `container.Exec()` calls.