Add `DB_PROVIDER and DB_CONNECTION_STRING` environment variables

docker-compose.yml

@@ -2,7 +2,13 @@ version: '3.4'
 
 services:
   qtc-net-server:
-    image: ${DOCKER_REGISTRY-}qtcnetserver
     build:
       context: .
       dockerfile: qtc-net-server/Dockerfile
+    environment:
+      - ASPNETCORE_ENVIRONMENT=Production
+      - ASPNETCORE_HTTP_PORTS=8080
+      - DB_CONNECTION_STRING=Data Source=qtcdev.db
+      - DB_PROVIDER=SQLite
+    ports:
+      - "8080:8080"

qtc-net-server/Program.cs

@@ -22,6 +22,21 @@ builder.Services.AddControllers();
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddDbContext<DataContext>(options =>
 {
+    if(!string.IsNullOrEmpty(Environment.GetEnvironmentVariable("DB_CONNECTION_STRING")) && !string.IsNullOrEmpty(Environment.GetEnvironmentVariable("DB_PROVIDER")))
+    {
+        switch(Environment.GetEnvironmentVariable("DB_PROVIDER"))
+        {
+            case "MySQL":
+                options.UseMySQL(Environment.GetEnvironmentVariable("DB_CONNECTION_STRING")!);
+                break;
+            case "SQLite":
+                options.UseSqlite(Environment.GetEnvironmentVariable("DB_CONNECTION_STRING")!);
+                break;
+        }
+
+        return;
+    }
+
     if (builder.Environment.IsProduction()) options.UseMySQL(builder.Configuration.GetConnectionString("DefaultConnection"));
     else options.UseSqlite(builder.Configuration.GetConnectionString("DevelopmentConnection"));