docker: added alexjustesen speedtest-tracker

wiki/docker/alexjustesen_-_speedtest-tracker.md

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+# alexjustesen - speedtest-tracker
+
+This is a [Docker](/wiki/docker.md) container for a selfhosted internet speed
+tracker.
+The official container and documentation was made by
+[alexjustesen](https://github.com/alexjustesen/speedtest-tracker).
+
+## Set-up
+
+Create the file `rebuild.sh`.
+Change the settings according to your needs and run `./rebuild.sh` afterwards.
+It is important to set a correct app key as described in
+[the following section](#environment-variables).
+
+### Environment-variables
+
+Set the following variables with the -e tag.
+
+| Name                 | Usage                                                                                              | Default         |
+| -------------------- | -------------------------------------------------------------------------------------------------- | --------------- |
+| `APP_KEY`            | This is used for encryption and can be generated by `echo -n 'base64:'; openssl rand -base64 32;`  |                 |
+| `DB_CONNECTION`      | Database connection type                                                                           |                 |
+| `PGID`               | Group ID                                                                                           |                 |
+| `PUID`               | User ID                                                                                            |                 |
+| `APP_TIMEZONE`       | Timezone of the app                                                                                | `Europe/London` |
+| `DISPLAY_TIMEZONE`   | Timezone of the display                                                                            | `Europe/London` |
+| `SPEEDTEST_SCHEDULE` | Cron-formatted schedule for speedtest (`6 */6 * * *`: 6 minutes after every 6th hour)              |                 |
+
+### Volumes
+
+Set the following volumes with the -v tag.
+
+| Outside mount/volume name | Container mount | Description          |
+| ------------------------- | --------------- | -------------------- |
+| `speedtest_config`        | `/config`       | storage for config   |
+| `speedtest_keys`          | `/config/keys`  | storage for ssl keys |
+
+### Ports
+
+Set the following ports with the -p tag.
+
+| Container Port | Recommended outside port | Protocol | Description               |
+| -------------- | ------------------------ | -------- | ------------------------- |
+| `80`           | `8765`                   | TCP      | WebUI                     |
+| `443`          | ``                       | TCP      | SSL-encrypted WebUI       |
+
+### rebuild.sh
+
+```sh
+#!/bin/sh
+docker stop speedtest
+docker rm speedtest
+docker pull lscr.io/linuxserver/speedtest-tracker:latest
+docker run --name speedtest \
+    --restart unless-stopped \
+    -p 8765:80 \
+    -e PUID=1000 \
+    -e PGID=1000 \
+    -e APP_KEY="<generate>" \
+    -e DB_CONNECTION=sqlite \
+    -e SPEEDTEST_SCHEDULE="6 */6 * * *" \
+    -e APP_TIMEZONE="Europe/Berlin" \
+    -e DISPLAY_TIMEZONE="Europe/Berlin" \
+    -v speedtest_config:/config \
+    -v speedtest_keys:/config/keys \
+    -d lscr.io/linuxserver/speedtest-tracker:latest
+```