Docker: In Dockerfile, copy files temporarily, but not for final image -

Docker: In Dockerfile, copy files temporarily, but not for final image -

i have java service i'd package, , thing final docker image needs jar file , config file. however, need run gradle command first build jar, don't want things gradle uses in result docker image.

here's current dockerfile:

run apt-get update && apt-get install -y openjdk-7-jdk re-create . / run ./gradlew shadowjar cmd ["java", "-jar", "service/build/libs/service.jar", "server", "service/service.yml"]

you can see have copy first can run ./gradlew (otherwise says command cannot found). in end, need service.jar , service.yml files.

i'm missing something, how can create available during ./gradlew build step, have result image include service.jar , service.yml.

building image works follows.

... docker build command utilize whatever directory contains dockerfile build context (including of subdirectories). build context sent docker daemon before building image, means if utilize / source repository, entire contents of hard drive sent daemon ...

see https://docs.docker.com/reference/builder/

i see no way accomplish want. there 2 options:

having build dependencies within image , build jar file within container. bloats image.

i recommend build jar separately , add executable , config files when build. means build dependencies must available on development environment, image little can be.

docker