29 add additional services

[hasanheroglu]

Closes #29.

Here we have new services:

• Portainer: dashboard to manager our containers
• Prometheus: exports information from docker cAdvisor and traefik
• Grafana: visualize exported monitoring data via Prometheus
• cAdvisor: export information from containers

Docker compose files

I have separated docker-compose file into two docker-compose files to make it easy to maintain:

• docker-compose-things.yaml: consists of configuration for test-things
• docker-compose-infra.yaml: consists of infrastructural tools such as portainer, traefik, grafana, cadvisor

Auth & Authz

Regarding auth & authz for additional services, I added simple basic auth for now; maybe it will be easier to see how the tools work together while testing this PR. Therefore, this PR would also close #26.

Portainer alternatives

Similar tools to Portainer:

• dyrector-io: A open-source tool made by a small team. Need to run few containers to use the whole thing.
• Yacht
• And more tools like CapRover, Cockpit

What I would suggest is that we try Portainer and see how it fits our usage. Since we don't depend on it critically, it would be easy to switch to something else in the future.

Resource usages

I have seen varying usage of resources for CPU (5-20%) and memory (400-500MB). I have already put limits in docker files for resource usage, but we can adjust them in the future depending on our needs.

[egekorkan]

Additionally, we can also save the dashboard config in GitHub. That way, anyone who tests locally can replicate the hosted dashboard