I'm trying to do a custom dockerfile with jenkins on it. I would to wait until port 8080 is open instead of doing an ugly 'sleep 60' with netcat but I'm not very confident with bash scripts and netcat.
Here is an example of what i'm trying to do:
#!/bin/bash opened=0 while [ "$opened" == "0" ]; do echo "Waiting jenkins to launch on 8080..." nc -vz localhost 8080 done echo "Jenkins launched"
You can't set netcat to wait until some port is open, so you have to add part for waiting before next check is made. Try this:
#!/bin/bash echo "Waiting jenkins to launch on 8080..." while ! nc -z localhost 8080; do sleep 0.1 # wait for 1/10 of the second before check again done echo "Jenkins launched"