chore: debug sshserver errors

testhelper/docker/resource/sshserver/sshserver.go

@@ -119,31 +119,38 @@ func Setup(pool *dockertest.Pool, cln resource.Cleaner, opts ...Option) (*Resour
 	}
 
 	var (
-		buf     *bytes.Buffer
 		timeout = time.After(30 * time.Second)
 		ticker  = time.NewTicker(200 * time.Millisecond)
 	)
 loop:
 	for {
 		select {
 		case <-ticker.C:
-			buf = bytes.NewBuffer(nil)
+			stdOut := bytes.NewBuffer(nil)
+			stdErr := bytes.NewBuffer(nil)
+
 			exitCode, err := container.Exec([]string{"cat", "/config/logs/openssh/current"}, dockertest.ExecOptions{
-				StdOut: buf,
+				StdOut: stdOut,
+				StdErr: stdErr,
 			})
+			logs := func() string {
+				stream := bytes.NewBuffer(nil)
+				_ = pool.Client.Logs(dc.LogsOptions{Container: container.Container.ID, OutputStream: stream, ErrorStream: stream})
+				return stream.String()
+			}
 			if err != nil {
-				cln.Log("could not exec into SSH server:", err)
+				cln.Logf("could not exec into SSH server: %s. \nstdout:\n%s\nstderr:\n%s\nlogs:\n%s", err, stdOut.String(), stdErr.String(), logs())
 				continue
 			}
 			if exitCode != 0 {
-				cln.Log("invalid exit code while exec-ing into SSH server:", exitCode)
+				cln.Logf("invalid exit code while exec-ing into SSH server: %d. \nstdout:\n%s\nstderr:\n%s\nlogs:\n%s", exitCode, stdOut.String(), stdErr.String(), logs())
 				continue
 			}
-			if buf.String() == "" {
+			if stdOut.String() == "" {
 				cln.Log("SSH server not ready yet")
 				continue
 			}
-			if !strings.Contains(buf.String(), "Server listening on :: port "+exposedPort) {
+			if !strings.Contains(stdOut.String(), "Server listening on :: port "+exposedPort) {
 				cln.Log("SSH server not listening on port yet")
 				continue
 			}