Added docker building.

.dockerignore

.gitlab-ci.yml

Cargo.lock

Cargo.toml

Dockerfile

README.md

helm/.helmignore

helm/Chart.yaml

helm/templates/NOTES.txt

helm/templates/_helpers.tpl

helm/templates/deployment.yaml

helm/templates/ingress.yaml

helm/templates/service.yaml

helm/templates/serviceaccount.yaml

helm/templates/tests/test-connection.yaml

helm/values.yaml

logo.png

src/args.rs

src/bot/filters/filtered_handler.rs

src/bot/filters/groups.rs