feat: leverage .env file (#42)

* feat: leverage .env file

- prevent user from modifying docker-compose.yml
- prevent user from building db url by itself, thanks to dotenv-expand

* refactor: expose db port only to other services

* refactor: expose db port only to other services

---------

Co-authored-by: João Lucas <77590858+dev-stupid-codes@users.noreply.github.com>

.env.example

@@ -1,6 +1,15 @@
-DATABASE_URL=postgresql://johndoe:randompassword@localhost:5432/mydb?schema=public
+PORT=3000
 SALT="this is a very insecure salt, change it"
 
+DB_NAME=mydb
+DB_PROVIDER=postgres
+DB_HOST=db # db refers to the name of the service in docker-compose.yml
+DB_USER=johndoe
+DB_PASSWORD=randompassword
+
+# do not modify. copy as-is. dotenv-expand will replace the variables
+DATABASE_URL=${DB_PROVIDER}://${DB_USER}:${DB_PASSWORD}@${DB_HOST}:5432?schema=public
+
 MAIL_ENABLED=false
 MAIL_SERVER=smtp.gmail.com
 MAIL_PORT=465

README.md

@@ -53,7 +53,13 @@ Right now, my instance is using PostgreSQL on Vercel. However, it can be run usi
 
 ### .env Configuration
 
-`DATABASE_URL` needs to point to a running SQL database. It uses PostgreSQL by default, but can be changed to MySQL or SQLite by modifying the provider in [schema.prisma](src/lib/server/prisma/schema.prisma).
+- `DB_NAME` is the database name;
+- `DB_PROVIDER` uses 'postgres' by default, but can be changed to MySQL or SQLite.
+- `DB_HOST` database host (defaults to 'db', but can be changed to aything like localhost)
+- `DB_USER` database user
+- `DB_PORT` database port 5432
+- `DB_PASSWORD` the database user password
+- `DATABASE_URL` you don't need to modify this variable (thanks to dotenv-expand). keep it though!
 
 Remember to modify `SALT` to something secure if you plan on using user accounts.
 

docker-compose.yml

@@ -1,22 +1,33 @@
 version: '3.3'
+networks:
+  yabin-network:
+    name: yabin-network
+    ipam:
+      driver: default
 services:
   yabin:
+    container_name: yabin
     ports:
-      - '3000:3000'
+      - '${PORT:-3000}:${PORT:-3000}'
     image: 'yureien/yabin:latest'
-    environment:
-      - DATABASE_URL=postgresql://user:pass@db:5432/yabin?schema=public
+    env_file: .env
     depends_on:
       - db
+    networks:
+      - yabin-network
   db:
+    container_name: yabin-db
+    restart: always
     image: postgres:15-alpine
+    env_file: .env
+    expose:
+      - '5432'
     environment:
-      POSTGRES_USER: user
-      POSTGRES_PASSWORD: pass
-      POSTGRES_DB: yabin
+      POSTGRES_USER: ${DB_USER:-yabin_user}
+      POSTGRES_PASSWORD: ${DB_USER_PASS:-123}
+      POSTGRES_DB: ${DB_NAME:-yabin_db}
       POSTGRES_HOST_AUTH_METHOD: "trust"
     volumes:
-      - db_data:/var/lib/postgresql/data:Z
-    restart: always
-volumes:
-  db_data: {}
+      - ./db-data:/var/lib/postgresql/data
+    networks:
+      - yabin-network

src/lib/server/prisma/schema.prisma

@@ -6,7 +6,7 @@ generator client {
 }
 
 datasource db {
-  provider = "postgresql"
+  provider = env("DB_PROVIDER")
   url      = env("DATABASE_URL")
 }