Bash script to start Docker containers

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP












0















This script works:



#!/bin/bash

for i in 1..10
 do echo “yes $i”
done


But when attempting to start several Docker containers it only starts the first container and exits:



docker_run.sh



#!/bin/bash

for i in 1..10
 do exec docker run —name docker-nginx$i -P -d nginx
 sleep 3
done


The sleep 3 was added to give it time. Not sure if it matters. Of course the script has to run with sudo permissions.






linux bash docker







share|improve this question



















  • 2





    Why do you use exec command? Try to do it running directly docker

    – Romeo Ninov
    Feb 14 at 19:33






  • 1





    Yeah that was it. Thanks.

    – justinnoor.io
    Feb 14 at 19:44















0















This script works:



#!/bin/bash

for i in 1..10
 do echo “yes $i”
done


But when attempting to start several Docker containers it only starts the first container and exits:



docker_run.sh



#!/bin/bash

for i in 1..10
 do exec docker run —name docker-nginx$i -P -d nginx
 sleep 3
done


The sleep 3 was added to give it time. Not sure if it matters. Of course the script has to run with sudo permissions.






linux bash docker







share|improve this question



















  • 2





    Why do you use exec command? Try to do it running directly docker

    – Romeo Ninov
    Feb 14 at 19:33






  • 1





    Yeah that was it. Thanks.

    – justinnoor.io
    Feb 14 at 19:44













0












0








0








This script works:



#!/bin/bash

for i in 1..10
 do echo “yes $i”
done


But when attempting to start several Docker containers it only starts the first container and exits:



docker_run.sh



#!/bin/bash

for i in 1..10
 do exec docker run —name docker-nginx$i -P -d nginx
 sleep 3
done


The sleep 3 was added to give it time. Not sure if it matters. Of course the script has to run with sudo permissions.






linux bash docker







share|improve this question
















This script works:



#!/bin/bash

for i in 1..10
 do echo “yes $i”
done


But when attempting to start several Docker containers it only starts the first container and exits:



docker_run.sh



#!/bin/bash

for i in 1..10
 do exec docker run —name docker-nginx$i -P -d nginx
 sleep 3
done


The sleep 3 was added to give it time. Not sure if it matters. Of course the script has to run with sudo permissions.






linux bash docker




linux bash docker






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Feb 14 at 19:33









Rui F Ribeiro

41.4k1481140




41.4k1481140










asked Feb 14 at 19:26









justinnoor.iojustinnoor.io

367319




367319







  • 2





    Why do you use exec command? Try to do it running directly docker

    – Romeo Ninov
    Feb 14 at 19:33






  • 1





    Yeah that was it. Thanks.

    – justinnoor.io
    Feb 14 at 19:44












  • 2





    Why do you use exec command? Try to do it running directly docker

    – Romeo Ninov
    Feb 14 at 19:33






  • 1





    Yeah that was it. Thanks.

    – justinnoor.io
    Feb 14 at 19:44







2




2





Why do you use exec command? Try to do it running directly docker

– Romeo Ninov
Feb 14 at 19:33





Why do you use exec command? Try to do it running directly docker

– Romeo Ninov
Feb 14 at 19:33




1




1





Yeah that was it. Thanks.

– justinnoor.io
Feb 14 at 19:44





Yeah that was it. Thanks.

– justinnoor.io
Feb 14 at 19:44










1 Answer
1






active

oldest

votes


















2














To run many docker machines your script should be like this:



#!/bin/bash

for i in 1..10
 do docker run —name docker-nginx$i -P -d nginx
 sleep 3
done


You should not use exec in this case as exec replaces the current process (your script) with the process resulting from executing its arguments (docker ...). This is why your script never gets past the first iteration.






share|improve this answer
























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    1 Answer
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    2














    To run many docker machines your script should be like this:



    #!/bin/bash

    for i in 1..10
     do docker run —name docker-nginx$i -P -d nginx
     sleep 3
    done


    You should not use exec in this case as exec replaces the current process (your script) with the process resulting from executing its arguments (docker ...). This is why your script never gets past the first iteration.






    share|improve this answer





























      2














      To run many docker machines your script should be like this:



      #!/bin/bash

      for i in 1..10
       do docker run —name docker-nginx$i -P -d nginx
       sleep 3
      done


      You should not use exec in this case as exec replaces the current process (your script) with the process resulting from executing its arguments (docker ...). This is why your script never gets past the first iteration.






      share|improve this answer



























        2












        2








        2







        To run many docker machines your script should be like this:



        #!/bin/bash

        for i in 1..10
         do docker run —name docker-nginx$i -P -d nginx
         sleep 3
        done


        You should not use exec in this case as exec replaces the current process (your script) with the process resulting from executing its arguments (docker ...). This is why your script never gets past the first iteration.






        share|improve this answer















        To run many docker machines your script should be like this:



        #!/bin/bash

        for i in 1..10
         do docker run —name docker-nginx$i -P -d nginx
         sleep 3
        done


        You should not use exec in this case as exec replaces the current process (your script) with the process resulting from executing its arguments (docker ...). This is why your script never gets past the first iteration.







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Feb 14 at 20:12









        Kusalananda

        135k17255418




        135k17255418










        answered Feb 14 at 19:48









        Romeo NinovRomeo Ninov

        6,58632028




        6,58632028



























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