lhci/README.md

# lhci

Custom image for lighthouse-ci

[![Build Status](https://img.shields.io/drone/build/docker/lhci?logo=drone&server=https%3A%2F%2Fdrone.rknet.org)](https://drone.rknet.org/docker/lhci)
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Custom wrapper Docker image for [lighthouse-ci](https://github.com/GoogleChrome/lighthouse-ci).

## Usage

There are two wrapper scripts around the lhci command you could use:

- `/usr/bin/lhci-official`: This will simply forward your command to the official binary at `/usr/local/bin/lhci`
- `/usr/bin/lhci`: This is a modified wrapper to post-process the created report file to prepare an upload.

The wrapper `/usr/bin/lhci` will do the following:

- create `DIST=$LHCI_BASE_DIR/$UPLOAD_OUTPUT_DIR/dist/`
- find all files flagged with `isRepresentativeRun` in the `manifest.json`
- copy those files to `$DIST`

To get it working you need to configure the `fileupload` in `.lighthouserc.yml`command line configuration will not work:

```Yaml
---
ci:
  [...]
  upload:
    target: filesystem
    # has to be a relative path to the .lighthouserc.yml location
    outputDir: lhci_reports
```

What you will get is the following file structure which could be used as an upload source:

```Shell
lhci_reports/dist/
├── 9cf658e2-202007160745.html
├── f33fa4c4-202007160745.html
└── ffae8d3e-202007160745.html

# <FILENAME_HASH>-<DATETIME>.html
```

You will also get the target URLs in your CI output:

```Shell
/usr/bin/lhci autorun

[...]

All results processed!

Dumping 6 reports to disk at /drone/src/lhci_reports...
Done writing reports to disk.

Done running autorun.

Post-process report files...
Report for http://localhost:43901/ will be uploaded to https://example.com/9cf658e2-202007160745.html
Report for http://localhost:43901/404.html will be uploaded to https://example.com/ffae8d3e-202007160745.html
Report for http://localhost:43901/posts/ will be uploaded to https://example.com/f33fa4c4-202007160745.html
```

```Shell
docker run -v $(pwd)/public:/drone/src lhci autorun

# or pass arguments to lhci
docker run -v $(pwd)/public:/drone/src lhci autorun --upload.target=temporary-public-storage
```

## Environment variables

```Shell
LHCI_BASE_DIR="/drone/src"
LHCI_SERVER_URL="https://example.com/"
```

## Build

```Shell
docker build -t lhci:latest .
```

## License

This project is licensed under the MIT License - see the [LICENSE](https://gitea.rknet.org/docker/lhci/src/branch/main/LICENSE) file for details.