feat(docker): switch Postgres service to custom-built image and update workflow to use build flag

Author: YuSunjo

.github/workflows/deploy-dev.yml

@@ -49,9 +49,8 @@ jobs:
           # 기존 컨테이너 중지 및 제거
           docker compose down
           
-          # 새 이미지 풀 및 컨테이너 시작
-          docker compose pull
-          docker compose up -d
+          # 컨테이너 빌드 및 시작
+          docker compose up -d --build
           
           # 사용하지 않는 이미지 정리
           docker image prune -f

memory-infra/docker/dev/Dockerfile-postgres

@@ -0,0 +1,6 @@
+FROM postgres:15-alpine
+
+RUN apk add --no-cache \
+    postgresql15-contrib \
+    postgis \
+    postgis-util

memory-infra/docker/dev/docker-compose.yml

@@ -2,7 +2,9 @@ version: '3.8'
 
 services:
   postgres:
-    image: postgis/postgis:15-3.3-arm64v8
+    build:
+      context: .
+      dockerfile: Dockerfile.postgres
     container_name: memory-postgres-dev
     ports:
       - "5433:5432"