docker-entrypoint.sh

#!/bin/sh

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### If unspecified, the hostname of the container is taken as the JobManager address
JOB_MANAGER_RPC_ADDRESS=${JOB_MANAGER_RPC_ADDRESS:-`hostname -f`}
###

if [ "$1" == "jobmanager" ]; then
    echo "Starting Job Manager"
    sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" $FLINK_HOME/conf/flink-conf.yaml
    grep -q -e 'blob.server.port:*' $FLINK_HOME/conf/flink-conf.yaml || echo "blob.server.port: 50100-50200" >> $FLINK_HOME/conf/flink-conf.yaml

    echo "config file: " && grep '^[^\n#]' $FLINK_HOME/conf/flink-conf.yaml
    $FLINK_HOME/bin/jobmanager.sh start cluster
elif [ "$1" == "taskmanager" ]; then

    sed -i -e "s/jobmanager.rpc.address: localhost/jobmanager.rpc.address: ${JOB_MANAGER_RPC_ADDRESS}/g" $FLINK_HOME/conf/flink-conf.yaml
    sed -i -e "s/taskmanager.numberOfTaskSlots: 1/taskmanager.numberOfTaskSlots: `grep -c ^processor /proc/cpuinfo`/g" $FLINK_HOME/conf/flink-conf.yaml

    echo "Starting Task Manager"
    echo "config file: " && grep '^[^\n#]' $FLINK_HOME/conf/flink-conf.yaml
    $FLINK_HOME/bin/taskmanager.sh start
else
    exec $@
fi

# prevent script to exit
tail -f /dev/null