Initial working image

Dockerfile

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+FROM alpine
+RUN wget -O minecraft_server.jar https://launcher.mojang.com/v1/objects/1b557e7b033b583cd9f66746b7a9ab1ec1673ced/server.jar
+RUN apk add openjdk11-jre
+COPY eula.txt /
+COPY server.properties /
+EXPOSE 25565
+CMD ["java", "-Xmx1024M", "-Xms1024M", "-jar", "minecraft_server.jar", "nogui"]

README.md

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+# Minecraft server container image
+The settings are in `server.properties`.
+The default port is `25565`.

eula.txt

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+#By changing the setting below to TRUE you are indicating your agreement to our EULA (https://account.mojang.com/documents/minecraft_eula).
+#Sun May 30 19:21:25 GMT 2021
+eula=true

server.properties

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+#Minecraft server properties
+#Sun May 30 19:21:25 GMT 2021
+enable-jmx-monitoring=false
+rcon.port=25575
+level-seed=
+gamemode=survival
+enable-command-block=false
+enable-query=false
+generator-settings=
+level-name=world
+motd=A Minecraft Server
+query.port=25565
+pvp=true
+generate-structures=true
+difficulty=easy
+network-compression-threshold=256
+max-tick-time=60000
+use-native-transport=true
+max-players=20
+online-mode=true
+enable-status=true
+allow-flight=false
+broadcast-rcon-to-ops=true
+view-distance=10
+max-build-height=256
+server-ip=0.0.0.0
+allow-nether=true
+server-port=25565
+enable-rcon=false
+sync-chunk-writes=true
+op-permission-level=4
+prevent-proxy-connections=false
+resource-pack=
+entity-broadcast-range-percentage=100
+rcon.password=
+player-idle-timeout=0
+force-gamemode=false
+rate-limit=0
+hardcore=false
+white-list=false
+broadcast-console-to-ops=true
+spawn-npcs=true
+spawn-animals=true
+snooper-enabled=true
+function-permission-level=2
+level-type=default
+text-filtering-config=
+spawn-monsters=true
+enforce-whitelist=false
+resource-pack-sha1=
+spawn-protection=16
+max-world-size=29999984