Firstly check your network environment.
This projects use external API.
You should check if you are in the network environment that allow it to access to the external API or not.
If you cannot, this project only use default data.
$ curl -vs http://openapi.seoul.go.kr:8088/your-auth-key/json/GetParkInfo/1/2/
Secondly, to run this project, you need Java SDK(JDK) 1.8.
Ensure that you have Java 8 installed and set to your JAVA_HOME.
$ java -version
java version "1.8.x_xxx"
$ ./gradlew clean dockerBuildImage
$ docker-compose up
$ docker-compose down