# speed-data-docker Debian-based Docker image that runs hourly network speed tests (using speedtest-cli) and serves a simple web UI. ## Docker image Docker[^1] image on [Docker Hub](https://hub.docker.com/repository/docker/asolkar/speed-data-docker/general) ### What the container provides - Base: debian - Installs: speedtest-cli - Runs: a cron job to execute `run_speed_test.sh` hourly - Serves: `index.html` and generated JS files on port 8080 via busybox httpd ### Files added/edited - `Dockerfile` - builds the image - `start.sh` - entrypoint: starts cron and httpd - `run_speed_test.sh` - existing script (copied into image) ### Build locally Make sure Docker is installed locally. From the project root run: ```bash docker build -t speed-data-app . ``` ### Prepare for Docker Hub ```bash docker image build --no-cache -t asolkar/speed-data-docker:_VERSION_ . docker push asolkar/speed-data-docker:_VERSION_ ``` ## Run container Run with a named Docker volume (recommended). The container serves on `$PORT` inside the container (default 8080). Map a host port to the container port with `-p :`. ```bash docker volume create speed-data-volume docker run -d --name speed-data -e PORT=8080 -p 8080:8080 --restart unless-stopped \ -v speed-data-volume:/var/www/data/speed \ speed-data-app ``` Alternatively, run with a host bind mount (for direct access to files on the host): ```bash docker build -t speed-data-app . docker rm -f $(docker ps -a -q --filter name=speed\-data --filter status=running) || true \ && docker volume create speed-data-volume && \ docker run -d --name speed-data -e CRON_MINUTE=18 -e PORT=8080 -p 8585:8080 --restart unless-stopped \ -v ~/docker-data/speed-data-app/data:/var/www/data/speed speed-data-app ``` ## Verify - Visit http://localhost:8080 to view `index.html` (which reads `speedtest.js` and `speedtest.short.js`). - Cron runs at minute 0 every hour. Logs go to `/var/log/cron.log` inside the container. ## Log in to running container for debug ```bash docker exec -it _CONTAINER_ID_ /bin/bash ``` ## Notes - Data files (`speedtest.js`, `speedtest.short.js`, and the raw JSON file) are written to `/var/www/data/speed` inside the container. That path is declared as a Docker VOLUME in the `Dockerfile` so you can mount a named volume or a host directory. - If you mount a host directory, ensure the directory is writeable by the container process. You can either: - run the container as root (not recommended), or - chown/chmod the host directory appropriately (e.g., `chown 1000:1000 /path/on/host` or `chmod a+rw /path/on/host`) so the container can write files. [^1]: _Note_: AI agent used to Dockerize existing project