dockerfile - Run jar file in docker image -


i create docker image java , coppying jar file in image . dockerfile :

from anapsix/alpine-java maintainer myname  copy testprj-1.0-snapshot.jar /home/testprj-1.0-snapshot.jar run java -jar /home/testprj-1.0-snapshot.j 

after execute following command

docker build -t imagename. 

in console see output application , everthing fine . when stop image don`t know how run image again ? when execute following command :

docker run -i -t imagename java -jar /home/testprj-1.0-snapshot.jar 

the application run again ,but in dockerfile wrote command. how run image without command , application run automatically ?

there difference between images , containers.

  • images build once
  • you can start containers images

in case:

change image:

from anapsix/alpine-java maintainer myname  copy testprj-1.0-snapshot.jar /home/testprj-1.0-snapshot.jar cmd ["java","-jar","/home/testprj-1.0-snapshot.jar"] 

build image:

docker build -t imagename . 

now invoke program inside container:

docker run --name myprogram imagename 

now restart program restarting container:

docker restart myprogram 

your program changed? rebuild image!:

docker rmi imagename docker build -t imagename . 

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