minecraft: switch CTM server to vanilla MC

Change-Id: I8189b7c544ba3c7ae3a62fdd4105119e9d18317a
diff --git a/personal/q3k/minecraft/Dockerfile-vanilla-1.16.5 b/personal/q3k/minecraft/Dockerfile-vanilla-1.16.5
new file mode 100644
index 0000000..59bcdef
--- /dev/null
+++ b/personal/q3k/minecraft/Dockerfile-vanilla-1.16.5
@@ -0,0 +1,16 @@
+FROM ubuntu:20.04
+
+RUN set -e -x ;\
+    export DEBIAN_FRONTEND=noninteractive ;\
+    apt-get -y update ;\
+    apt-get -y upgrade ;\
+    apt-get -y install git openjdk-8-jre-headless wget unzip
+
+RUN set -e -x ;\
+    useradd -rm minecraft
+
+USER minecraft
+WORKDIR /home/minecraft
+
+RUN set -e -x ;\
+    wget --quiet -O server.jar https://launcher.mojang.com/v1/objects/1b557e7b033b583cd9f66746b7a9ab1ec1673ced/server.jar