Korrekturen des README-Skriptes auf first-contact übernommen

diff --cc README.sh
index 0544297,0ee50a9..73ceebc
--- 1/README.sh
--- 2/README.sh
+++ b/README.sh
@@@ -9,23 -7,27 +9,23 @@@ the
    exit
  fi
  
 -mvn package || exit 1
 -if [ "$1" = "build" ]; then exit; fi
 -
 -trap 'kill $(jobs -p) 2>/dev/null' EXIT
 +docker-compose up -d zookeeper kafka cli
  
 -docker-compose up -d
 +if [[
 +  $(docker image ls -q $IMAGE) == "" ||
 +  "$1" = "build"
 +]]
 +then
 +  mvn install || exit
 +else
 +  echo "Using image existing images:"
 +  docker image ls $IMAGE
 +fi
  
  echo "Waiting for the Kafka-Cluster to become ready..."
- docker-compose exec kafka cub kafka-ready -b kafka:9092 1 60 > /dev/null 2>&1 || exit 1
+ docker-compose exec cli cub kafka-ready -b kafka:9092 1 60 > /dev/null 2>&1 || exit 1
 -
 -echo "Producing messages"
 -mvn exec:java@producer
 -
 -echo "Reading messages"
 -mvn exec:java@consumer &
 -sleep 7
 -kill $(jobs -p)
 -sleep 2
 -
 -echo "Re-Reading messages"
 -mvn exec:java@consumer &
 -sleep 7
 -kill $(jobs -p)
 -sleep 2
 +docker-compose up setup
 +docker-compose up -d producer
 +sleep 5
 +docker-compose stop producer
 +docker-compose logs producer