Release v0.3.1 (#14)

* fix: clippy

* しーあいをちゃんとする (#5)

* fix: build image workflow, add: CI workflow(clippy)

* fuck YAML

* fix: ghcr.io username, update: cloudflared container image

* fix: update minimal docker-compose version to 3.2 for volume config

* update: split hostname & version config to .env

* fix: CI trigger typo

* add: README badge, deploy method

* add: auto-deployment service

* version 0.3.0

* update: remove page transition, rename /subdomain -> /api/add_subdomain

* add: link

* rm: Tera context in web::Data

* add: screenshot

* rename: service file, fix: deploy script

* fix: push container image

* fix: container image location

* fix

* add: update check for repo & container image

* update: no output when no update

* add: auto update service

* fix: start timer

* add: comment, rm: unneeded func, use

* version 0.3.1

* fix: update condition

* add: notify to Discord