overleaf/develop/README.md

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# Overleaf Community Edition, development environment
## Building and running
In this `develop` directory, build and start the services:
```shell
bin/up
```
Once the services are running, open <http://localhost/launchpad> to create the first admin account.
After making any changes to the code, run `bin/up` manually to rebuild the changed Docker images and recreate the changed containers.
## TeX Live
Compiling a PDF requires building a TeX Live image to handle the compilation inside Docker:
```shell
docker build texlive -t texlive-full
```
> **Note**
> To compile on a macOS host, you'll need to override the path to the Docker socket by creating a `.env` file in this directory, containing
> `DOCKER_SOCKET_PATH=/var/run/docker.sock.raw`
## Development
To avoid running `bin/up` after every code change, you can run Overleaf
Community Edition in _development mode_, where services will automatically
update on code changes. To do this, use the included `bin/dev` script:
```shell
bin/dev
```
This will start all services using `nodemon`, which will automatically monitor
the code and restart the services as necessary. This will incur a performance
hit, especially on macOS, so in order to only start a subset of the services,
provide a space-separated list to the `bin/dev` script.
```shell
bin/dev [service1] [service2] ... [serviceN]
```
> **Note**
> Starting the `web` service in _development mode_ will only update the `web`
> service when backend code changes. In order to automatically update frontend
> code as well, make sure to start the `webpack` service in _development mode_
> as well.
## Debugging
When run in _development mode_ most services expose a debugging port to which
you can attach a debugger such as
[the inspector in Chrome's Dev Tools](chrome://inspect/) or one integrated into
an IDE. The following table shows the port exposed on the **host machine** for
each service:
| Service | Port |
| ------------------ | ---- |
| `web` | 9229 |
| `clsi` | 9230 |
| `chat` | 9231 |
| `contacts` | 9232 |
| `docstore` | 9233 |
| `document-updater` | 9234 |
| `filestore` | 9235 |
| `notifications` | 9236 |
| `real-time` | 9237 |
| `track-changes` | 9238 |
To attach to a service using Chrome's _remote debugging_, go to
<chrome://inspect/> and make sure _Discover network targets_ is checked. Next
click _Configure..._ and add an entry `localhost:[service port]` for each of the
services you want to attach a debugger to.
After adding an entry, the service will show up as a _Remote Target_ that you
can inspect and debug.