CODEWITHSUNDEEP
spring-bootdockerdockerfilemicroservicesdocker-machine
Sagar Gangwal
Sagar Gangwal

Reputation: 7937

Running docker image with argument

I am working with spring-boot along with docker images.

I am running my springboot application directly from IntelliJ name as runtime with some of argument like below

-DCONFIG_DIR=D:\baseapimanager\runtime\config

I am able to run it successfully.

But by creating a docker image and running that image, it's not able to run. As i am not aware about how to pass argument while running docker image.

Here i had shared my Docker file contents as well.

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD target/docker-runtime.jar docker-runtime.jar
EXPOSE 8091
ENTRYPOINT ["java","-jar","docker-runtime.jar"]

And running below docker command i am trying to create image file for same.

docker build -f Dockerfile -t docker-runtime .

After this executing below command to run this generated image file.

docker run -p 8091:8091 docker-runtime

Without passing that argument and commenting business with that argument, it's working perfectly fine.

Any help will be appreciated.

Upvotes: 1

Views: 1624

Answers (3)

Sagar Gangwal
Sagar Gangwal

Reputation: 7937

I had made below changes in my Docker file.

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ADD target/docker-runtime.jar docker-runtime.jar
EXPOSE 8091
ENTRYPOINT ["java","-jar","-DCONFIG_DIR=/shareddata","docker-runtime.jar"]

And while running an image i had bind that address using below command , and it's working fine.

docker run -p 8091:8091 --mount type=bind,source=/c/Users/lenovo/data,target=/shareddata docker-runtime

This had resolved my problem.

Upvotes: 0

Venkatesh A
Venkatesh A

Reputation: 2474

So to pass an argument into docker build do the following....

  1. ARG -DCONFIG_DIR

add the above line in the docker compose file.....

  1. $-DCONFIG_DIR

use the above in the dockerfile and access the variable

  1. docker-compose build --build-arg -DCONFIG_DIR = ''

Upvotes: 0

Simon Martinelli
Simon Martinelli

Reputation: 36103

If CONFIG_DIR is a parameter you consume with Spring configuration @Value or @ConfigurationProperties you can pass the parameter as environment variable as well.

Environment variables can be passed to the container with -e

docker run -p 8091:8091 -e CONFIG_DIR=D:\baseapimanager\runtime\config docker-runtime

But as D:\baseapimanager\runtime\config looks like a Windows path that will not be visible inside the Docker container you have to add the configs to the docker image as well or mount a docker volume and the the parameter must point to the volume.

Upvotes: 2

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