feat(infra): make database engine configurable

Add support for pluggable database backends via SHELLHUB_DATABASE env
var. MongoDB service moved from main docker-compose.yml to separate
compose files.

- Add SHELLHUB_DATABASE env var (defaults to mongo)
- Add logic in bin/utils to load database-specific compose files
- Remove hardcoded mongo service from main docker-compose.yml

Author: heiytor

.env

@@ -34,6 +34,8 @@ SHELLHUB_PROXY=false
 # Enable automatic HTTPS with Let's Encrypt.
 SHELLHUB_AUTO_SSL=false
 
+SHELLHUB_DATABASE=mongo
+
 # The domain of the server.
 # NOTICE: Required only if automatic HTTPS is enabled.
 # VALUES: A valid domain name

bin/utils

@@ -71,6 +71,18 @@ COMPOSE_FILE="docker-compose.yml"
 [ "$SHELLHUB_ENTERPRISE" = "true" ] && [ "$SHELLHUB_ENV" != "development" ] && COMPOSE_FILE="${COMPOSE_FILE}:docker-compose.enterprise.yml"
 [ -f docker-compose.override.yml ] && COMPOSE_FILE="${COMPOSE_FILE}:docker-compose.override.yml"
 
+SHELLHUB_DATABASE=${SHELLHUB_DATABASE:-mongo}
+case "$SHELLHUB_DATABASE" in
+    mongo)
+        COMPOSE_FILE="${COMPOSE_FILE}:docker-compose.${SHELLHUB_DATABASE}.yml"
+        ;;
+    *)
+        echo "⚠️ WARNING: Unknown SHELLHUB_DATABASE '$SHELLHUB_DATABASE'. Defaulting to mongodb."
+        SHELLHUB_DATABASE="mongodb"
+        COMPOSE_FILE="${COMPOSE_FILE}:docker-compose.mongodb.yml"
+        ;;
+esac
+
 [ -f "$EXTRA_COMPOSE_FILE" ] && COMPOSE_FILE="${COMPOSE_FILE}:${EXTRA_COMPOSE_FILE}"
 
 export COMPOSE_FILE

docker-compose.mongo.yml

@@ -0,0 +1,15 @@
+services:
+  mongo:
+    image: mongo:4.4.29
+    restart: unless-stopped
+    healthcheck:
+      test: 'test $$(echo "rs.initiate({ _id: ''rs'', members: [ { _id: 0, host: ''mongo:27017'' } ] }).ok || rs.status().ok" | mongo --quiet) -eq 1'
+      interval: 30s
+      start_period: 10s
+    command: ["--replSet", "rs", "--bind_ip_all"]
+    networks:
+      - shellhub
+  api:
+    depends_on:
+      mongo:
+        condition: service_healthy

docker-compose.yml

@@ -60,10 +60,8 @@ services:
       - SHELLHUB_INTERNAL_HTTP_CLIENT_API_BASE_URL=${SHELLHUB_INTERNAL_HTTP_CLIENT_API_BASE_URL}
       - SHELLHUB_INTERNAL_HTTP_CLIENT_ENTERPRISE_BASE_URL=${SHELLHUB_INTERNAL_HTTP_CLIENT_ENTERPRISE_BASE_URL}
     depends_on:
-      - mongo
       - redis
     links:
-      - mongo
       - redis
     secrets:
       - api_private_key
@@ -145,16 +143,6 @@ services:
       - SHELLHUB_LOG_FORMAT=${SHELLHUB_LOG_FORMAT}
     networks:
       - shellhub
-  mongo:
-    image: mongo:4.4.29
-    restart: unless-stopped
-    healthcheck:
-      test: 'test $$(echo "rs.initiate({ _id: ''rs'', members: [ { _id: 0, host: ''mongo:27017'' } ] }).ok || rs.status().ok" | mongo --quiet) -eq 1'
-      interval: 30s
-      start_period: 10s
-    command: ["--replSet", "rs", "--bind_ip_all"]
-    networks:
-      - shellhub
   redis:
     image: redis
     restart: unless-stopped