I created this simple user API for my personal contribution to my theses which I had to write for school. It utilizes SpringBoot to host some simple REST endpoints for managing users, which are stored inside a MariaDB database. It also has OpenAPI and SwaggerUI built into it to visualize what it can do.

To run this simple API application on your server you only need to follow a few simple steps.
System requirements: A Linux machine with a relatively modern version of docker-compose installed. (If you're running on another OS you might have to adjust some things inside the Dockerfile. For example, for Windows the RUN ./gradlew build has to be changed to RUN ./gradlew.bat build.)

1. Clone this GitHub repository onto your machine by either running:

git clone https://github.com/tillhfm/simple-user-api.git

or downloading the repository manually to your machine.

2. Open up the docker-compose.yml file and change the values of the pre-defined environment variables to hold your database credentials. The user table is being created once the application runs.

3. In your terminal, navigate inside the repository folder and run:

docker-compose build

4. After the process is finished (might take up to a minute), execute:

docker-compose up -d

The application will now be available at http://localhost:8080, given you didn't change any of the port options.
To stop the application, head back to the repository folder and run:

docker-compose down