Update Docker Documentation
The provided docker-compose template is no longer up to date.
The image url results in a 403 error.
```
[jonny@biostar matemat]$ docker compose up
[+] Running 0/1
⠿ matemat Error 0.4s
Error response from daemon: Head "https://gitlab.com/v2/s3lph/matemat/manifests/v0.2.14": error parsing HTTP 403 response body: no error details found in HTTP response body: "{\"message\":\"access forbidden\",\"status\":\"error\",\"http_status\":403}"
[jonny@biostar matemat]$
```
Using `registry.gitlab.com` instead works.
---
The `restart: true` line also causes an error.
```
[jonny@biostar matemat]$ docker compose up
[+] Running 8/8
⠿ matemat Pulled 4.4s
⠿ 213ec9aee27d Pull complete 0.7s
⠿ 47858aee13bf Pull complete 1.0s
⠿ d659b9b3a0dd Pull complete 1.5s
⠿ a1788886d67c Pull complete 1.6s
⠿ 3bc1e8001eda Pull complete 1.8s
⠿ 7ae57320bc49 Pull complete 2.0s
⠿ c4ce9bca26a1 Pull complete 3.0s
[+] Running 1/0
⠿ Network matemat_default Created 0.0s
⠋ Container matemat-matemat-1 Creating 0.0s
Error response from daemon: invalid restart policy 'true'
[jonny@biostar matemat]$
```
Removing the line works.
issue