chore(docker): add MSSQL to test docker-compose and update password

- Add MSSQL service to tests/docker-compose.yml
- Update MSSQL password in db.docker-compose.yml to use simpler password
  (YourStrongPassword123 instead of YourStrong@Passw0rd) to avoid
  URL encoding issues in connection strings

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: tanbro

db.docker-compose.yml

@@ -25,7 +25,7 @@ services:
     ports:
       - "127.0.0.1:1433:1433"
     environment:
-      MSSQL_SA_PASSWORD: "YourStrong@Passw0rd"
+      MSSQL_SA_PASSWORD: "YourStrongPassword123"
       MSSQL_PID: "Developer"
       MSSQL_TCP_PORT: "1433"
       ACCEPT_EULA: "Y"

tests/docker-compose.yml

@@ -6,6 +6,7 @@ x-common-environment: &common-environment
   MYSQL_USER: test
   MYSQL_PASSWORD: test
   POSTGRES_PASSWORD: test
+  MSSQL_SA_PASSWORD: "YourStrongPassword123"
 
 services:
   mysql:
@@ -26,14 +27,25 @@ services:
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U postgres -h 127.0.0.1"]
 
+  mssql:
+    image: mcr.microsoft.com/mssql/server:2022-latest
+    environment:
+      <<: *common-environment
+      MSSQL_PID: "Developer"
+      MSSQL_TCP_PORT: "1433"
+      ACCEPT_EULA: "Y"
+    ports:
+      - "1433:1433"
+    # Note: MSSQL container requires at least 2GB RAM to run properly
+
   python:
     build: .
     volumes:
       - type: bind
         source: ..
         target: /workspace
     working_dir: /workspace
-    depends_on: [mysql, postgres]
+    depends_on: [mysql, postgres, mssql]
     environment:
       <<: *common-environment
     env_file: .env