Initial commit: SQL Server 2025 local dev stack

compose.yml

@@ -0,0 +1,35 @@
+services:
+  mssql:
+    image: mcr.microsoft.com/mssql/server:2025-RTM-ubuntu-22.04
+    container_name: mssql2025
+
+    env_file:
+      - .env
+
+    environment:
+      ACCEPT_EULA: "Y"
+      # IMPORTANT (SQL Server 2025):
+      # Use "Developer" or "DeveloperStandard" (NOT "Enterprise Developer")
+      MSSQL_PID: "${MSSQL_PID:-Developer}"
+
+    # Workaround for CPU topology/NUMA assert (sosnumap.cpp)
+    cpuset: "0-15"
+    cpus: "16.0"
+
+    ports:
+      - "${MSSQL_PORT:-1433}:1433"
+
+    volumes:
+      - ./data:/var/opt/mssql
+      - ./backup:/var/opt/mssql/backup
+      - ./db/seed:/seed:ro
+      - ./db/migrations:/migrations:ro
+
+    healthcheck:
+      test: ["CMD-SHELL", "/opt/mssql-tools18/bin/sqlcmd -S localhost -U sa -P \"$$MSSQL_SA_PASSWORD\" -Q \"SELECT 1\" || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 30
+      start_period: 25s
+
+    restart: unless-stopped