ci: distribute the compiled integration test binary

cmd/hi/docker.go

@@ -289,6 +289,12 @@ func createTestContainer(ctx context.Context, cli *client.Client, config *RunCon
 		},
 	}
 
+	if config.TestBinary != "" {
+		// A custom server image may have its own entrypoint; run the tests directly.
+		containerConfig.Entrypoint = testCmd[:1]
+		containerConfig.Cmd = testCmd[1:]
+	}
+
 	// Get the correct Docker socket path from the current context
 	dockerSocketPath := getDockerSocketPath()
 

cmd/hi/run_test.go

@@ -142,8 +142,10 @@ func TestCompiledTestContainer(t *testing.T) {
 
 	request := <-requests
 	assert.Equal(t, "headscale:ci-test", request.Image)
+	// A custom server image may already have a headscale entrypoint.
+	assert.Equal(t, []string{"/integration.test"}, []string(request.Entrypoint))
 	assert.Equal(t, []string{
-		"/integration.test", "-test.run", config.TestPattern,
+		"-test.run", config.TestPattern,
 		"-test.failfast", "-test.timeout", "15m0s", "-test.v",
 	}, []string(request.Cmd))
 	assert.Contains(t, request.Env, "HEADSCALE_INTEGRATION_POSTGRES=1")