in docker-compose, pin redis version to 8 & postgres version to 16

Author: brendan-kellam

docker-compose.yml

@@ -28,7 +28,7 @@ services:
       # https://docs.sourcebot.dev/docs/configuration/environment-variables
 
   postgres:
-    image: docker.io/postgres:${POSTGRES_VERSION:-17}
+    image: docker.io/postgres:${POSTGRES_VERSION:-16}
     restart: always
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U postgres"]
@@ -45,7 +45,7 @@ services:
       - sourcebot_postgres_data:/var/lib/postgresql/data
 
   redis:
-    image: docker.io/redis:${REDIS_VERSION:-latest}
+    image: docker.io/redis:${REDIS_VERSION:-8}
     restart: always
     ports:
       - 127.0.0.1:6379:6379