Fix db host

.env.example

@@ -1 +1,2 @@
 TOKEN=
+DB_HOST=db

.github/workflows/deploy.yml

@@ -14,6 +14,7 @@ jobs:
         uses: SpicyPizza/create-envfile@v1
         with:
           envkey_TOKEN: ${{ secrets.TOKEN }}
+          envkey_DB_HOST: db
       - uses: alex-ac/github-action-ssh-docker-compose@master
         name: Docker-Compose Remote Deployment
         with:

src/main/kotlin/io/github/wulkanowy/schools/DatabaseFactory.kt

@@ -9,8 +9,9 @@ import org.jetbrains.exposed.sql.transactions.transaction
 
 object DatabaseFactory {
     fun init() {
+        val host = System.getenv("DB_HOST") ?: "localhost"
         val database = Database.connect(
-            url = "jdbc:pgsql://localhost:5004/schools",
+            url = "jdbc:pgsql://$host:5004/schools",
             driver = "com.impossibl.postgres.jdbc.PGDriver",
             user = "postgres",
             password = "postgres",