Update environment variable names in docker

docker-compose-test.yml

@@ -56,7 +56,7 @@ services:
       - SSO_JWT_SECRET=some_sso_secret
       - CLIENT_URL=http://localhost:3000
       - GATEWAY_URL=http://localhost:8080/api
-      - PUPPETEER_TASK_HANDLER_URL=http://localhost:9090/
+      - CONTENT_FETCH_URL=http://localhost:9090/
       - REMINDER_TASK_HANDLER_URL=/svc/reminders/trigger
       - BOOKMARKLET_JWT_SECRET=some_bookmarklet_secret
       - BOOKMARKLET_VERSION=1.0.0

docker-compose.yml

@@ -93,7 +93,7 @@ services:
       - SSO_JWT_SECRET=some_sso_secret
       - CLIENT_URL=http://localhost:3000
       - GATEWAY_URL=http://localhost:8080/api
-      - PUPPETEER_TASK_HANDLER_URL=http://content-fetch:8080/?token=some_token
+      - CONTENT_FETCH_URL=http://content-fetch:8080/?token=some_token
       - REMINDER_TASK_HANDLER_URL=/svc/reminders/trigger
     depends_on:
       migrate:

packages/api/src/util.ts

@@ -101,7 +101,7 @@ const nullableEnvVars = [
   'SAMPLE_METRICS_LOCALLY',
   'PUPPETEER_QUEUE_LOCATION',
   'PUPPETEER_QUEUE_NAME',
-  'PUPPETEER_TASK_HANDLER_URL',
+  'CONTENT_FETCH_URL',
   'PREVIEW_IMAGE_WRAPPER_ID',
   'PREVIEW_GENERATION_SERVICE_URL',
   'GCS_UPLOAD_SA_KEY_FILE_PATH',