[Uptime] Use base path for screenshot url (#81930)

x-pack/plugins/uptime/public/components/monitor/synthetics/__tests__/executed_journey.test.tsx

@@ -253,6 +253,9 @@ describe('ExecutedJourney component', () => {
             }
           }
         />
+        <EuiSpacer
+          size="s"
+        />
       </EuiFlexGroup>
     `);
   });

x-pack/plugins/uptime/public/components/monitor/synthetics/executed_journey.tsx

@@ -79,6 +79,7 @@ export const ExecutedJourney: FC<ExecutedJourneyProps> = ({ journey }) => (
       {journey.steps.filter(isStepEnd).map((step, index) => (
         <ExecutedStep key={index} index={index} step={step} />
       ))}
+      <EuiSpacer size="s" />
     </EuiFlexGroup>
   </div>
 );

x-pack/plugins/uptime/public/components/monitor/synthetics/executed_step.tsx

@@ -41,7 +41,7 @@ export const ExecutedStep: FC<ExecutedStepProps> = ({ step, index }) => (
       <div>
         <StatusBadge status={step.synthetics?.payload?.status} />
       </div>
-      <EuiSpacer />
+      <EuiSpacer size="s" />
       <div>
         <EuiFlexGroup>
           <EuiFlexItem grow={false}>
@@ -87,6 +87,5 @@ export const ExecutedStep: FC<ExecutedStepProps> = ({ step, index }) => (
         </EuiFlexGroup>
       </div>
     </div>
-    <EuiSpacer />
   </>
 );

x-pack/plugins/uptime/public/components/monitor/synthetics/step_screenshot_display.tsx

@@ -16,7 +16,7 @@ import { i18n } from '@kbn/i18n';
 import { FormattedMessage } from '@kbn/i18n/react';
 import React, { useContext, useEffect, useRef, useState, FC } from 'react';
 import { useIntersection } from 'react-use';
-import { UptimeThemeContext } from '../../../contexts';
+import { UptimeSettingsContext, UptimeThemeContext } from '../../../contexts';
 
 interface StepScreenshotDisplayProps {
   screenshotExists?: boolean;
@@ -41,6 +41,8 @@ export const StepScreenshotDisplay: FC<StepScreenshotDisplayProps> = ({
     colors: { lightestShade: pageBackground },
   } = useContext(UptimeThemeContext);
 
+  const { basePath } = useContext(UptimeSettingsContext);
+
   const [isImagePopoverOpen, setIsImagePopoverOpen] = useState<boolean>(false);
   const [isOverlayOpen, setIsOverlayOpen] = useState<boolean>(false);
 
@@ -59,7 +61,7 @@ export const StepScreenshotDisplay: FC<StepScreenshotDisplayProps> = ({
   }, [hasIntersected, isIntersecting, setHasIntersected]);
 
   let content: JSX.Element | null = null;
-  const imgSrc = `/api/uptime/journey/screenshot/${checkGroup}/${stepIndex}`;
+  const imgSrc = basePath + `/api/uptime/journey/screenshot/${checkGroup}/${stepIndex}`;
   if (hasIntersected && screenshotExists) {
     content = (
       <>