- Update Spring Boot release, Checkstyle, Mysql.
- Formatting pom.xml with sortpom-maven-plugin.
- Rename README to standard file name.
- Adding GitHub Action for Gradle.
* Upgrade for Spring Boot 3.1
* Remove 'encoding' because of Maven WARNING
* Extracting logo SVG into file
* Making logo src context-path aware
* Remove unused image
The current docker-compose.yml is still in version 1, which is
deprecated: https://docs.docker.com/compose/compose-file/compose-versioning/
So if you try to run `docker-compose up` with a recent version of
docker-compose, the following error occurs:
(root) Additional property mysql is not allowed
Version 2.2 was chosen because it's not deprecated, but it also has been
released some time ago: Compose version 2.2 requires docker engine
version 1.13.0, which was released on 2017-01-18. So, with this version,
hopefully no users will have any issues either with deprecation warnings
or with a version that is not yet supported by their docker-engine.