K6 Docker Image: update-ca-certificates not found on release 0.49.0, working fine on 0.48.0

[reinhartbuit]

Brief summary

I currently create a custom Docker Image where I copy .crt files into the container and then finally it runs 'update-ca-certificates'. I have been using the docker image grafana/k6:0.48.0 and did not encounter any issues.

I now changed the docker file to use grafana/k6:0.49.0 instead, and now I get /bin/sh: update-ca-certificates: not found.

`FROM grafana/k6:0.49.0

USER root

COPY certs/xxxxx.crt /usr/local/share/ca-certificates/ixxxxx.capi.crt
RUN update-ca-certificates

COPY test /test

USER 1000

EXPOSE 6565

ENV TZ="Africa/Johannesburg"

ENTRYPOINT ["k6", "run"]`

k6 version

0.49.0

OS

macOS

Docker version and image (if applicable)

grafana/k6:0.49.0

Steps to reproduce the problem

1. Create DockerFile with contents:

`FROM grafana/k6:0.48.0

USER root

COPY certs/xxxxxx.crt /usr/local/share/ca-certificates/xxxxxx.crt
RUN update-ca-certificates

COPY test /test

USER 1000

EXPOSE 6565

ENV TZ="Africa/Johannesburg"

ENTRYPOINT ["k6", "run"]`

2. Run command: 'docker build .'

3. Build is successful.

4. Change the Docker file FROM to 0.49.0 instead of 0.48.0

5. Run command: 'docker build.

Expected behaviour

Docker build to be successful

Actual behaviour

[5/6] RUN update-ca-certificates:
0.197 /bin/sh: update-ca-certificates: not found

[joanlopez]

Hey @reinhartbuit,

I guess that's because after this commit, the k6 Docker image no longer has ca-certificates installed by default.

So, in order to get it back working, since v0.49.0, you'll need to slightly modify your Dockerfile, from:

RUN update-ca-certificates

to:

RUN apk add --no-cache ca-certificates && \
    update-ca-certificates

Can you try with that, please?

Thanks!

[reinhartbuit]

Thank you. That makes sense.
Yes it worked, thanks for the help