Hello ,
I am Newbie to Confluent and Kafka world!
I am building a kafka connect docker image using docker file provided in confluent github. repo. Its integrated with Azure pipelines and i don’t have option to pass run time args to docker build. What would be best approach to overcome the limitation?
can i hard-code ARGS in Dockerfile?
ARG DOCKER_UPSTREAM_REGISTRY=Docker Hub
ARG DOCKER_UPSTREAM_TAG=5.2.5-10
ARG DOCKER_TAG=5.2.5-10
Hi Shahed,
so welcome 
Did I get it wright:
you’re trying to build the Kafka connect image with tag 5.2.5-10 ?
If I remember right you should be able to set the tag in you yaml file like
variables:
ImageName: 'confluentinc/cp-kafka-connect:5.2.5-10'
Best,
Michael
Thanks Michael for response
I will try this.
Appreciate if you can also point me to any documentation that explains process of building Kafka connect image using docker build. Basically looking for what args / env values to pass at build time.
I would recommend these documentation
https://docs.confluent.io/platform/current/installation/docker/development.html#extending-images
using this image
I was able to build the image. When i try to instantiate a container i get following error
udo docker run 42ba7d8faaa5
===> User
uid=1000(appuser) gid=1000(appuser) groups=1000(appuser)
===> Configuring …
CONNECT_BOOTSTRAP_SERVERS is required.
Command [/usr/local/bin/dub ensure CONNECT_BOOTSTRAP_SERVERS] FAILED !
Later i tried providing bootstrap server as envronment variable
docker run -e CONNECT_BOOTSTRAP_SERVERS = localhost:9092 42ba7d8faaa5
but it fails too with
docker: invalid reference format.
any syntax that i need to follow to pass the variable?
Appreciate your help!
hey,
seems as there is a space in your command
it should be
docker run -e CONNECT_BOOTSTRAP_SERVERS=localhost:9092 42ba7d8faaa5
HTH,
Michael
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