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Merge pull request #4 from justfalter/minecraft-drop-privs 

Drop privileges before starting server
This commit is contained in:
Geoff Bourne 2014-11-01 17:37:14 -05:00
parent 5566cf0953 4ff077f151
commit 55cffbb598
3 changed files with 54 additions and 48 deletions
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2
minecraft-server/Dockerfile
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@ -7,10 +7,12 @@ RUN update-alternatives --install /usr/bin/js js /usr/bin/js24 100
RUN wget -O /usr/bin/jsawk https://github.com/micha/jsawk/raw/master/jsawk
RUN chmod +x /usr/bin/jsawk
RUN useradd -M -s /bin/false minecraft
EXPOSE 25565
ADD start.sh /start
ADD start-minecraft.sh /start-minecraft
VOLUME ['/data']
ADD server.properties /tmp/server.properties

49
minecraft-server/start-minecraft.sh Executable file
View File

@ -0,0 +1,49 @@
#!/bin/sh
case $VERSION in
LATEST)
export VERSION=`wget -O - https://s3.amazonaws.com/Minecraft.Download/versions/versions.json | jsawk -n 'out(this.latest.release)'`
;;
SNAPSHOT)
export VERSION=`wget -O - https://s3.amazonaws.com/Minecraft.Download/versions/versions.json | jsawk -n 'out(this.latest.snapshot)'`
;;
esac
cd /data
if [ ! -e minecraft_server.$VERSION.jar ]; then
echo "Downloading minecraft_server.$VERSION.jar ..."
wget -q https://s3.amazonaws.com/Minecraft.Download/versions/$VERSION/minecraft_server.$VERSION.jar
fi
if [ ! -e server.properties ]; then
cp /tmp/server.properties .
fi
if [ -n "$MOTD" ]; then
sed -i "/motd\s*=/ c motd=$MOTD" /data/server.properties
fi
if [ -n "$LEVEL" ]; then
sed -i "/level-name\s*=/ c level-name=$LEVEL" /data/server.properties
fi
if [ -n "$OPS" ]; then
echo $OPS | awk -v RS=, '{print}' >> ops.txt
fi
if [ ! -e /data/eula.txt ]; then
if [ "$EULA" != "" ]; then
echo "# Generated via Docker on $(date)" > eula.txt
echo "eula=$EULA" >> eula.txt
else
echo ""
echo "Please accept the Minecraft EULA at"
echo " https://account.mojang.com/documents/minecraft_eula"
echo "by adding the following immediately after 'docker run':"
echo " -e EULA=TRUE"
echo ""
exit 1
fi
fi
java $JVM_OPTS -jar minecraft_server.$VERSION.jar

51
minecraft-server/start.sh
View File

@ -1,49 +1,4 @@
#!/bin/sh
case $VERSION in
LATEST)
export VERSION=`wget -O - https://s3.amazonaws.com/Minecraft.Download/versions/versions.json | jsawk -n 'out(this.latest.release)'`
;;
SNAPSHOT)
export VERSION=`wget -O - https://s3.amazonaws.com/Minecraft.Download/versions/versions.json | jsawk -n 'out(this.latest.snapshot)'`
;;
esac
cd /data
if [ ! -e minecraft_server.$VERSION.jar ]; then
echo "Downloading minecraft_server.$VERSION.jar ..."
wget -q https://s3.amazonaws.com/Minecraft.Download/versions/$VERSION/minecraft_server.$VERSION.jar
fi
if [ ! -e server.properties ]; then
cp /tmp/server.properties .
fi
if [ -n "$MOTD" ]; then
sed -i "/motd\s*=/ c motd=$MOTD" /data/server.properties
fi
if [ -n "$LEVEL" ]; then
sed -i "/level-name\s*=/ c level-name=$LEVEL" /data/server.properties
fi
if [ -n "$OPS" ]; then
echo $OPS | awk -v RS=, '{print}' >> ops.txt
fi
if [ ! -e /data/eula.txt ]; then
if [ "$EULA" != "" ]; then
echo "# Generated via Docker on $(date)" > eula.txt
echo "eula=$EULA" >> eula.txt
else
echo ""
echo "Please accept the Minecraft EULA at"
echo " https://account.mojang.com/documents/minecraft_eula"
echo "by adding the following immediately after 'docker run':"
echo " -e EULA=TRUE"
echo ""
exit 1
fi
fi
java $JVM_OPTS -jar minecraft_server.$VERSION.jar
set -e
chown -R minecraft:minecraft /data
exec su -s /bin/bash -c /start-minecraft minecraft