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" == "--help" -o "$1" == "-h" ]; then
    echo "Usage: $(basename $0) (jobmanager|taskmanager)"
    exit 0
elif [ "$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

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

exec "$@"