Update Dockerfile

v120.4

Author: frankbaele

Dockerfile

@@ -1,5 +1,5 @@
 From openjdk:8-jre-slim
 RUN apt-get update
 RUN apt-get install curl -y
-RUN curl -L https://github.com/Anuken/Mindustry/releases/download/v113.2/server-release.jar > server-release.jar
+RUN curl -L https://github.com/Anuken/Mindustry/releases/download/v120.4/server-release.jar > server-release.jar
 CMD java -jar server-release.jar