Any way to change uid of elasticsearch user in docker image?

Elastic Stack Elasticsearch
1

Hi all,

Is there any way to change the uid of the elasticsearch user in the oss elasticsearch docker image without rebuilding the image ?

I'm using docker.elastic.co/elasticsearch/elasticsearch-oss:6.1.2, and I can see that elasticsearch has a uid of 1000. This is a reserved uid in my environment, so I need to change this to 1001.

Ideally I want to keep using upstream without owning the maintenance of the image, but just change this. Is there any simple way to do this ?

Thanks,

2

Looks like the solution is to build a new image FROM the upstream ...
Dockerfile

ARG VERSION=6.1.2
FROM docker.elastic.co/elasticsearch/elasticsearch-oss:$VERSION 
RUN groupmod -g 1001 elasticsearch
RUN usermod -u 1001 -g 1001 elasticsearch
RUN chown -R elasticsearch /usr/share/elasticsearch
RUN sed -i -e 's/--userspec=1000/--userspec=1001/g' \
           -e 's/UID 1000/UID 1001/' \
           -e 's/chown -R 1000/chown -R 1001/' /usr/local/bin/docker-entrypoint.sh
RUN chown elasticsearch /usr/local/bin/docker-entrypoint.sh
3

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