CODEWITHSUNDEEP
dockerdockerfilekerberosdevops
Nurzhan Nogerbek
Nurzhan Nogerbek

Reputation: 5246

How to install kerberos client in docker?

I am trying to create Docker image by next Dockerfile. It must to install Kerberos client.

Dockerfile:

FROM node:latest

RUN export DEBIAN_FRONTEND=noninteractive

RUN apt-get -qq update
RUN apt-get -qq install krb5-user libpam-krb5
RUN apt-get -qq clean

COPY / ./

EXPOSE 3000

CMD ["npm", "start"]

Next command RUN apt-get -qq install krb5-user libpam-krb5 from Dockerfile ask me to enter the value to interactive prompt which looks like:

Default Kerberos version 5 realm:

The point is that the command does not terminate even if I write value and press enter. Whats wrong and how to fix it?

Upvotes: 9

Views: 16963

Answers (1)

Sergei
Sergei

Reputation: 893

You need the -y parameter for the apt

FROM node:latest

ENV DEBIAN_FRONTEND=noninteractive

RUN apt-get -qq update && \
    apt-get -yqq install krb5-user libpam-krb5 && \
    apt-get -yqq clean

COPY / ./

EXPOSE 3000

CMD ["npm", "start"]

And pay attention, that each RUN directive creates one additional layer in the image. That means, your clean command will create a new layer, but all package cache will remain in other layers. So reducing the amount of these directives will be nice. It would help you to shrink the image size.

Upvotes: 14

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