Create the env file only if not empty

backend/stack.ts

@@ -167,9 +167,12 @@ export class Stack {
 
         // Write or overwrite the compose.yaml
         fs.writeFileSync(path.join(dir, this._composeFileName), this.composeYAML);
+
         // Write or overwrite the .env
+        if (this.composeENV.trim() !== "") {
             fs.writeFileSync(path.join(dir, ".env"), this.composeENV);
         }
+    }
 
     async deploy(socket? : DockgeSocket) : Promise<number> {
         const terminalName = getComposeTerminalName(this.name);