Merge branch 'sc1-redis-cluster' into 'master'

Add redis-cluster-6.2.12 image for CI pipeline

Closes #127

See merge request https://gitlab.com/gitlab-org/gitlab-build-images/-/merge_requests/683

Merged-by: Stan Hu <stanhu@gmail.com>
Approved-by: Stan Hu <stanhu@gmail.com>
Co-authored-by: Sylvester Chin <schin@gitlab.com>

.gitlab/ci/custom.images.yml

@@ -73,3 +73,6 @@ postgres-14-pgvector-0.4.1:
 
 postgres-15-pgvector-0.4.1:
   extends: .build_static_image
+
+redis-cluster-6.2.12:
+  extends: .build_static_image

Dockerfile.redis-cluster-6.2.12

@@ -0,0 +1,9 @@
+FROM redis:6.2.12
+
+COPY scripts/run-redis-cluster /docker-entrypoint.sh
+
+RUN chmod 755 /docker-entrypoint.sh
+
+EXPOSE 7001 7002 7003
+
+ENTRYPOINT ["/docker-entrypoint.sh"]

scripts/run-redis-cluster

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+# Approach references https://docs.docker.com/config/containers/multi-service_container/#use-a-wrapper-script
+# This script starts 3 Redis server process in the background and syncs them after a short wait.
+
+start_redis_server() {
+  redis-server --port $1\
+    --cluster-enabled yes \
+    --cluster-node-timeout 5000 \
+    --bind 0.0.0.0 \
+    --cluster-config-file "$2" &
+}
+
+start_redis_server 7001 nodes-1.conf
+start_redis_server 7002 nodes-2.conf
+start_redis_server 7003 nodes-3.conf
+
+sleep 3
+
+redis-cli --cluster create 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 --cluster-yes
+
+wait -n
+
+exit $?