Set openfaas env variables with local-run

Set env variables that are normally injects by the provider like,
'OPENFAAS_NAME' and 'OPENFAAS_NAMESPACE' when running function with
local-run.

This change makes it possible to use built-in function authentication
with local-run. The 'jwt_auth_local' env variable is to true by default
to help with this.

Signed-off-by: Han Verstraete (OpenFaaS Ltd) <han@openfaas.com>

commands/local_run.go

@@ -195,7 +195,21 @@ func runFunction(ctx context.Context, name string, opts runOptions, args []strin
 	// Always try to remove before running, to clear up any previous state
 	removeContainer(name)
 
-	cmd, err := buildDockerRun(ctx, name, services.Functions[name], opts)
+	function := services.Functions[name]
+
+	functionNamespace = function.Namespace
+	if len(functionNamespace) == 0 {
+		functionNamespace = "openfaas-fn"
+	}
+
+	// Add openfaas env variables that are normally injected by the provider.
+	opts.extraEnv["OPENFAAS_NAME"] = name
+	opts.extraEnv["OPENFAAS_NAMESPACE"] = functionNamespace
+
+	// Enable local jwt auth by default
+	opts.extraEnv["jwt_auth_local"] = "true"
+
+	cmd, err := buildDockerRun(ctx, name, function, opts)
 	if err != nil {
 		return err
 	}