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Need help to understand the below shell script

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# 1  
Old 08-04-2017
Need help to understand the below shell script
Please help me to understand the below 3 lines of code.execute shell in jenkins


1)
Code:
APP_IP=$( docker inspect --format '{{ .NetworkSettings.Networks.'"$DOCKER_NETWORK_NAME"'.IPAddress }}' ${PROJECT_NAME_KEY}"-CI" )

2)
Code:
HOST_WORKSPACE=$(echo ${WORKSPACE} | sed 's#/workspace#/var/lib/docker/volumes/jenkins_slave_home/_data#')

3)
Code:
docker run --rm -t --net=${DOCKER_NETWORK_NAME} \
-v ${HOST_WORKSPACE}:/zap/wrk/:rw \
iniweb/owasp-zap2docker-stable:2.5.0 zap-baseline.py -s -r zap-test-report.html -t ${APP_URL} || exit 0


Moderator's Comments:
Mod Comment Please use CODE tags as required by forum rules!
Last edited by naresh85; 08-04-2017 at 01:50 PM.. Reason: Added CODE tags.
# 2  
Old 08-04-2017
1) This puts the output from the command

Code:
docker inspect --format '{{ .NetworkSettings.Networks.'"$DOCKER_NETWORK_NAME"'.IPAddress }}' ${PROJECT_NAME_KEY}"-CI"

...into the variable APP_IP.

2) This prints the value of the variable WORKSPACE into sed, which replaces the text "/workspace" with "/var/lib/docker/volumes/jenkins_slave_home/_data", and places the result into the variable HOST_WORKSPACE.

3) This runs docker with the given parameters, and if it returns an error code, quits the script immediately (with no error result, oddly.)

Docker itself is a commercial product which is difficult for me to say much about.
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