fix: adding remove logs aggregator container function when it already…

… exists (#1974)

## Description:
The remove aggregator function was missing when it already exists

## Is this change user facing?
YES

## References (if applicable):
One of our users was experiencing a segmentation violation error because
this function was missing in the CreateEngine flow

container-engine-lib/lib/backend_impls/docker/docker_kurtosis_backend/logs_aggregator_functions/create_logs_aggregator.go

@@ -32,11 +32,21 @@ func CreateLogsAggregator(
 	}
 	if found {
 		logrus.Debugf("Found existing logs aggregator; cannot start a new one.")
-		logsAggregatorObj, _, err := getLogsAggregatorObjectAndContainerId(ctx, dockerManager)
+		logsAggregatorObj, containerId, err := getLogsAggregatorObjectAndContainerId(ctx, dockerManager)
 		if err != nil {
 			return nil, nil, stacktrace.Propagate(err, "An error occurred getting existing logs aggregator.")
 		}
-		return logsAggregatorObj, nil, nil
+		removeCtx := context.Background()
+		removeLogsAggregatorContainerFunc := func() {
+			if err := dockerManager.RemoveContainer(removeCtx, containerId); err != nil {
+				logrus.Errorf(
+					"Something failed while trying to remove the logs aggregator container with ID '%v'. Error was:\n%v",
+					containerId,
+					err)
+				logrus.Errorf("ACTION REQUIRED: You'll need to manually remove the logs aggregator server with Docker container ID '%v'!!!!!!", containerId)
+			}
+		}
+		return logsAggregatorObj, removeLogsAggregatorContainerFunc, nil
 	}
 
 	logsAggregatorNetwork, err := shared_helpers.GetEngineAndLogsComponentsNetwork(ctx, dockerManager)

container-engine-lib/lib/user_support_constants/user_support_constants_test.go

@@ -7,11 +7,17 @@ package user_support_constants
 
 import (
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 	"net/http"
 	"net/http/cookiejar"
 	"testing"
 )
 
+const (
+	safariUserAgent    = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
+	userAgentHeaderKey = "User-Agent"
+)
+
 func TestValidUrls(t *testing.T) {
 	for _, url := range urlsToValidateInTest {
 		jar, err := cookiejar.New(nil)
@@ -22,7 +28,11 @@ func TestValidUrls(t *testing.T) {
 		client := &http.Client{
 			Jar: jar,
 		}
-		resp, err := client.Get(url)
+		req, err := http.NewRequest(http.MethodGet, url, nil)
+		require.NoError(t, err, "Got an unexpected error while creating a new GET request with URL '%v'", url)
+		// Adding the User-Agent header because it's mandatory for sending a request to Twitter
+		req.Header.Set(userAgentHeaderKey, safariUserAgent)
+		resp, err := client.Do(req)
 		assert.NoError(t, err, "Got an unexpected error checking url '%v'", url)
 		assert.True(t, isValidReturnCode(resp.StatusCode), "URL '%v' returned unexpected status code: '%d'", url, resp.StatusCode)
 		assert.NoError(t, err, "Got an unexpected error checking url '%v'", url)