chore(docker): add postgres service and env-based database provider switching

Author: Diogo-Ferraz

.env.example

@@ -1,5 +1,9 @@
 # Required in base compose
 SQL_PASSWORD=ChangeMe_SqlServer!
+POSTGRES_DB=taskmanagement
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=postgres
+DATABASE_PROVIDER=SqlServer
 
 # Development defaults used by docker-compose.override.yml
 OPENIDDICT_ENCRYPTION_KEY=DRjd/GnduI3Efzen9V9BvbNUfc/VKgXltV7Kbk9sMkY=

README.md

@@ -169,6 +169,10 @@ Benefits:
 ### Optional environment setup
 You can copy `.env.example` to `.env` and adjust values if needed.
 
+Database selection:
+- `DATABASE_PROVIDER=SqlServer` (default, current baseline)
+- `DATABASE_PROVIDER=Postgres` (PostgreSQL path during migration)
+
 ### Run
 ```bash
 docker compose up --build

docker-compose.override.yml

@@ -1,6 +1,10 @@
 version: '3.8'
 
 services:
+  postgres:
+    ports:
+      - "5432:5432"
+
   sqlserver:
     environment:
       - SQL_PASSWORD=${SQL_PASSWORD:-Passw0rd!1234}
@@ -10,10 +14,11 @@ services:
 
   auth-service:
     environment:
-      - DatabaseProvider=SqlServer
+      - DatabaseProvider=${DATABASE_PROVIDER:-SqlServer}
       - ASPNETCORE_ENVIRONMENT=Development
       - ASPNETCORE_URLS=http://+:8080
       - ConnectionStrings__TaskManagementDbConnection=Server=sqlserver,1433;Database=TaskManagementDb;User Id=sa;Password=${SQL_PASSWORD:-Passw0rd!1234};TrustServerCertificate=True;
+      - ConnectionStrings__TaskManagementDbConnectionPostgres=Host=postgres;Port=5432;Database=${POSTGRES_DB:-taskmanagement};Username=${POSTGRES_USER:-postgres};Password=${POSTGRES_PASSWORD:-postgres};
       - OpenIddict__Issuer=https://auth.localhost
       - OpenIddict__Audience=task_management_api_dev
       - OpenIddict__EncryptionKey=${OPENIDDICT_ENCRYPTION_KEY:-DRjd/GnduI3Efzen9V9BvbNUfc/VKgXltV7Kbk9sMkY=}
@@ -44,10 +49,11 @@ services:
     extra_hosts:
       - "auth.localhost:host-gateway"
     environment:
-      - DatabaseProvider=SqlServer
+      - DatabaseProvider=${DATABASE_PROVIDER:-SqlServer}
       - ASPNETCORE_ENVIRONMENT=Development
       - ASPNETCORE_URLS=http://+:8080
       - ConnectionStrings__TaskManagementDbConnection=Server=sqlserver,1433;Database=TaskManagementDb;User Id=sa;Password=${SQL_PASSWORD:-Passw0rd!1234};TrustServerCertificate=True;
+      - ConnectionStrings__TaskManagementDbConnectionPostgres=Host=postgres;Port=5432;Database=${POSTGRES_DB:-taskmanagement};Username=${POSTGRES_USER:-postgres};Password=${POSTGRES_PASSWORD:-postgres};
       - OpenIddict__Issuer=https://auth.localhost
       - OpenIddict__Audience=task_management_api_dev
       - OpenIddict__EncryptionKey=${OPENIDDICT_ENCRYPTION_KEY:-DRjd/GnduI3Efzen9V9BvbNUfc/VKgXltV7Kbk9sMkY=}

docker-compose.yml

@@ -1,6 +1,24 @@
 version: '3.8'
 
 services:
+  postgres:
+    image: postgres:16-alpine
+    environment:
+      - POSTGRES_DB=${POSTGRES_DB:-taskmanagement}
+      - POSTGRES_USER=${POSTGRES_USER:-postgres}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-postgres}
+    volumes:
+      - postgres-data:/var/lib/postgresql/data
+    networks:
+      - taskmanagement-network
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-postgres} -d ${POSTGRES_DB:-taskmanagement}"]
+      interval: 10s
+      retries: 10
+      start_period: 10s
+      timeout: 3s
+    restart: unless-stopped
+
   sqlserver:
     image: mcr.microsoft.com/mssql/server:2022-latest
     environment:
@@ -81,6 +99,7 @@ networks:
     driver: bridge
 
 volumes:
+  postgres-data:
   sqlserver-data:
   caddy_data:
   caddy_config: