bumped openjdk:8 <-> openjdk:16, added much easier setup instructions

Dockerfile

@@ -1,4 +1,4 @@
-FROM openjdk:8-jre-slim
+FROM openjdk:16-alpine
 RUN mkdir /gsc
 WORKDIR /gsc
 EXPOSE 19132/udp

README.md

@@ -15,5 +15,15 @@ GeyserConnect is a server that Minecraft: Bedrock Edition clients can connect to
 **Please note, this project is still a work in progress and should not be used on production. Expect bugs!**
 
 If you wish to run this in docker and/or use DNS redirection please see the appropriate folders in this repo.
-#### Docker: [here](docker)
+
+## GeyserConnect using Docker
+This contains the docker image and a basic way of running GeyserConnect
+
+### Setup
+1. Download and build the docker file using `./build-image.sh <imagename>`
+2. Start geyser using this:
+```
+docker run --name "geyser-c" -d --restart always -p 19132:19132/udp -v $(pwd)/data:/gsc <imagename>
+```
+
 #### DNS: [here](bind9)

build-image.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+wget -O ./data/GeyserConnect.jar https://ci.opencollab.dev//job/GeyserMC/job/GeyserConnect/job/master/lastSuccessfulBuild/artifact/target/GeyserConnect.jar --no-check-certificate
+
+docker build -t $1 .

docker/README.md

@@ -1,10 +0,0 @@
-# GeyserConnect using Docker
-This contains the docker image and a basic way of running GeyserConnect
-
-## Setup
-1. Download GeyserConnect to a subfolder called `data`
-2. Build the docker file using `docker build -t geyser-connect .`
-3. Start geyser using this:
-```
-docker run --name "geyser-c" -d --restart always -p 19132:19132/udp -v $(pwd)/data:/gsc geyser-connect
-```