doc: Add `default-runtime` opt to daemon.json
This is a new flag for the Windows daemon.
@@ -1505,6 +1505,7 @@ This is a full example of the allowed configuration options on Windows:
"containerd-plugin-namespace": "docker-plugins",
"data-root": "",
"debug": true,
+ "default-runtime": "",
"default-ulimits": {},
"dns": [],
"dns-opts": [],
@@ -1537,6 +1538,13 @@ This is a full example of the allowed configuration options on Windows:
}
```
+The `default-runtime` option is by default unset, in which case dockerd will auto-detect the runtime. This detection is currently based on if the `containerd` flag is set.
+
+Accepted values:
+
+- `com.docker.hcsshim.v1` - This is the built-in runtime that Docker has used since Windows supported was first added and uses the v1 HCS API's in Windows.
+- `io.containerd.runhcs.v1` - This is uses the containerd `runhcs` shim to run the container and uses the v2 HCS API's in Windows.
+
#### Feature options
The optional field `features` in `daemon.json` allows users to enable or disable specific
daemon features. For example, `{"features":{"buildkit": true}}` enables `buildkit` as the
