Upgrade build-scripts to 3.4.0

This version fixes docker-compose health checks for dependent services. See
https://github.com/overleaf/dev-environment/pull/409 for details.

services/docstore/buildscript.txt

@@ -5,4 +5,4 @@ docstore
 --env-pass-through=
 --node-version=10.22.1
 --public-repo=True
---script-version=3.3.5
+--script-version=3.4.0

services/docstore/docker-compose.ci.yml

@@ -23,6 +23,7 @@ services:
     environment:
       ELASTIC_SEARCH_DSN: es:9200
       REDIS_HOST: redis
+      QUEUES_REDIS_HOST: redis
       MONGO_HOST: mongo
       POSTGRES_HOST: postgres
       GCS_API_ENDPOINT: gcs:9090
@@ -50,7 +51,14 @@ services:
     user: root
   mongo:
     image: mongo:4.0
+    healthcheck:
+      test: "mongo --quiet localhost/test --eval 'quit(db.runCommand({ ping: 1 }).ok ? 0 : 1)'"
+      interval: 1s
+      retries: 20
   gcs:
-    build:
-      context: test/acceptance/deps
-      dockerfile: Dockerfile.fake-gcs
+    image: fsouza/fake-gcs-server
+    command: ["--port=9090", "--scheme=http"]
+    healthcheck:
+      test: wget --quiet --output-document=/dev/null http://localhost:9090/storage/v1/b
+      interval: 1s
+      retries: 20

services/docstore/docker-compose.yml

@@ -28,6 +28,7 @@ services:
     environment:
       ELASTIC_SEARCH_DSN: es:9200
       REDIS_HOST: redis
+      QUEUES_REDIS_HOST: redis
       MONGO_HOST: mongo
       POSTGRES_HOST: postgres
       GCS_API_ENDPOINT: gcs:9090
@@ -48,8 +49,15 @@ services:
 
   mongo:
     image: mongo:4.0
+    healthcheck:
+      test: "mongo --quiet localhost/test --eval 'quit(db.runCommand({ ping: 1 }).ok ? 0 : 1)'"
+      interval: 1s
+      retries: 20
 
   gcs:
-    build:
-      context: test/acceptance/deps
-      dockerfile: Dockerfile.fake-gcs
+    image: fsouza/fake-gcs-server
+    command: ["--port=9090", "--scheme=http"]
+    healthcheck:
+      test: wget --quiet --output-document=/dev/null http://localhost:9090/storage/v1/b
+      interval: 1s
+      retries: 20