Kaniko / Elixir Issue

[joel....@gmail.com]

I'm attempting to use Kaniko to build an elixir container. Unfortunately it's failing on the command:

RUN mix local.hex --force

Here's the Dockerfile (a simplified version for debugging):

#===================
# Build Stage
#===================
FROM elixir:1.6.6-alpine as builder


# Building a container means targeting prod
ENV MIX_ENV=prod

# Install local hex and rebar3

RUN whoami
RUN ls -la /root/
RUN MIX_DEBUG=1 mix local.hex --force
RUN ls -la /root/
RUN mix local.rebar --force

Here's the skaffold.yaml:

apiVersion: skaffold/v1alpha2
kind: Config
build:
  artifacts:
  - imageName: gcr.io/XXXXXXXXXXX/kaniko-test
    workspace: .
  kaniko:
    gcsBucket: XXXXXXXXXXX-kaniko
    pullSecretName: kaniko-secret
    namespace: jx
deploy:
  kubectl:
    manifests:

Here's the output around the error message:

[kanikojffxh kaniko] time="2018-07-12T17:45:21Z" level=info msg="cmd: /bin/sh"

[kanikojffxh kaniko] time="2018-07-12T17:45:21Z" level=info msg="args: [-c whoami]"

[kanikojffxh kaniko] root

[kanikojffxh kaniko] time="2018-07-12T17:45:21Z" level=info msg="Taking snapshot of full filesystem..."

[kanikojffxh kaniko] time="2018-07-12T17:45:27Z" level=info msg="No files were changed, appending empty layer to config."

[kanikojffxh kaniko] time="2018-07-12T17:45:27Z" level=info msg="cmd: /bin/sh"

[kanikojffxh kaniko] time="2018-07-12T17:45:27Z" level=info msg="args: [-c ls -la /root/]"

[kanikojffxh kaniko] total 12

[kanikojffxh kaniko] drwx------    1 root     root          4096 May 17 17:01 .

[kanikojffxh kaniko] drwxr-xr-x    1 root     root          4096 Jul 12 17:45 ..

[kanikojffxh kaniko] drwxr-xr-x    2 root     root          4096 May 17 17:01 .docker

[kanikojffxh kaniko] time="2018-07-12T17:45:27Z" level=info msg="Taking snapshot of full filesystem..."

[kanikojffxh kaniko] time="2018-07-12T17:45:30Z" level=info msg="No files were changed, appending empty layer to config."

[kanikojffxh kaniko] time="2018-07-12T17:45:30Z" level=info msg="cmd: /bin/sh"

[kanikojffxh kaniko] time="2018-07-12T17:45:30Z" level=info msg="args: [-c MIX_DEBUG=1 mix local.hex --force]"

[kanikojffxh kaniko] time="2018-07-12T17:45:30Z" level=error msg="exit status 1"

FATA[0035] build step: kaniko build for [gcr.io/ox-dev-joel/kaniko-test]: waiting for pod to complete: pod already in terminal phase: Failed 

I get the same problem running inside the skaffold debug executor:

INFO[0026] cmd: /bin/sh

INFO[0026] args: [-c whoami]

root

INFO[0026] Taking snapshot of full filesystem...

INFO[0030] cmd: /bin/sh

INFO[0030] args: [-c ls -la /root/]

total 24

drwxr-xr-x    8 root     root           256 Jul 12 17:23 .

drwxr-xr-x    1 root     root          4096 Jul 12 17:23 ..

-rw-------    1 root     root           557 Jul 12 17:22 .ash_history

drwxr-xr-x    3 root     root            96 Jul 12 17:05 .mix

-rw-r--r--    1 root     root           398 Jul 12 17:22 Dockerfile

-rwxr-xr-x    1 root     root            86 Jul 12 17:04 build

-rwxr-xr-x    1 root     root           154 Jul 12 16:50 install_hex_rebar.sh

-rw-r--r--    1 root     root           315 Jul 12 16:24 skaffold.yaml

INFO[0030] Taking snapshot of full filesystem...

INFO[0031] No files were changed, appending empty layer to config.

INFO[0031] cmd: /bin/sh

INFO[0031] args: [-c MIX_DEBUG=1 mix local.hex --force]

ERRO[0032] exit status 1

But executing the command manually inside the debug executor works:

/ # /bin/sh -c "MIX_DEBUG=1 mix local.hex --force"

** Running mix loadconfig

** Running mix local.hex --force

* creating root/.mix/archives/hex-0.18.1

/ #

Any thoughts?

Thanks,
Joel

[Dan Lorenc]

Thanks for opening the issue on Github, we can debug there. 

https://github.com/GoogleContainerTools/kaniko/issues/234

Dan Lorenc

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