How do I debug node js app in Docker container?

Debug Node. js app running in a Docker container

1. Install Docker Extension for VSCode.
2. Expose port 9229 in the docker-compose. yml.
3. Add the inspect switch to the npm script.
4. Create a VSCode launch. json.
5. Start the docker container and attach the debugger.

Can we debug in Docker?

With version 0.9. 0 and later, the Docker extension provides more support for debugging applications within Docker containers, such as scaffolding launch. json configurations for attaching a debugger to applications running within a container.

How do I debug the code in Docker?

Create a remote debug configuration Before starting, the remote debug configuration should first launch the Docker run configuration and start the application in debug mode. From the main menu, select Run | Edit Configurations. and select Remote JVM Debug. and select Launch Docker Before Debug.

How do I run a node js in debug mode?

Open the starting file (typically index. js ), activate the Run and Debug pane, and click the Run and Debug Node. js (F5) button. The debugging screen is similar to Chrome DevTools with a Variables, Watch, Call stack, Loaded scripts, and Breakpoints list.

How do I debug a docker compose file?

Launch the debug configuration

1. If the application is already running, stop it. To do it, select the Docker Compose node in the Services tool window and click. in the toolbar.
2. Open the docker-compose-debug. yml file.
3. Click. in the gutter and start the debug configuration.

How do I debug a docker container in Visual Studio?

In Visual Studio, select Debug > Attach to Process (CTRL+ALT+P) to open the Attach to Process dialog box.

1. Set the Connection type to Docker (Linux Container).
2. Select Find… to set the Connection target via the Select Docker Container dialog box.

How do I run a JavaScript file in Vscode?

21 Answers

1. Install the Code Runner Extension.
2. Open the JavaScript code file in Text Editor, then use shortcut Control + Alt + N (or ⌃ Control + ⌥ Option + N on macOS), or press F1 and then select/type Run Code , the code will run and the output will be shown in the Output Window.

How do I debug Node JS in Intellij?

Debugging a running Node. js application

1. Open the embedded Terminal ( Alt+F12 ) and, type: node –inspect-brk
2. Launch a script from package. json or from the npm tool window, see Run and debug scripts for details.

How do I SSH into a container container?

1. Method 1: Use docker exec to Run Commands in a Docker Container.
2. Method 2: Use the docker attach Command to Connect to a Running Container.
3. Method 3: Use SSH to Connect to a Docker Container. Step 1: Enable SSH on System. Step 2: Get IP Address of Container. Step 3: SSH Into Docker Container.

How do you expose a Docker container?

How to Expose Ports in Docker

1. Add an EXPOSE instruction in the Dockerfile.
2. Use the –expose flag at runtime to expose a port.
3. Use the -p flag or -P flag in the Docker run string to publish a port.