CODEWITHSUNDEEP
skaffold
CodeGorilla
CodeGorilla

Reputation: 913

Getting build-args to docker.... from skaffold

I am using skaffold to deploy a developer-instance of a service into a local cluster, and one of the Dockerfile's uses a deploy-token to grab code from a local repo.

FROM something
ARG DEPLOY_TOKEN
ARG DEPLOY_SECRET

## stuff

RUN git clone https://${DEPLOY_TOKEN}:${DEPLOY_SECRET}@gitlab.example.com/myGroup/funky_plugin local/path

## more stuff

This is known, and I can use .env to feed a docker-compose.yml file, and gitlab CI/CD variables to feed a CI/CD build process :thumbs up:

In my skaffold.yaml file, I then match this with:

build:
  artifacts:
  - image: registry.gitlab.example.com/myGroup/awesome_app
    context: ../awesome_app
    docker:
      buildArgs:
        STACK_TOKEN: "{{.DEPLOY_TOKEN}}"
        STACK_SECRET: "{{.DEPLOY_SECRET}}"

My understanding (from reading https://skaffold.dev/docs/environment/env-file/) is that I can define these variables in skaffold.env (in the same dir as skaffold.yaml), and they will be picked up as environment variables - eg:

DEPLOY_TOKEN=abc
DEPLOY_SECRET=123

..... that's not happening

If I actually export DEPLOY_TOKEN=abc & export DEPLOY_SECRET=123... then it works.

  1. Am I correct in understanding of what skaffold.env does?
  2. How do I actually do this?

Upvotes: 1

Views: 2014

Answers (1)

Dan Erickson
Dan Erickson

Reputation: 41

I don't know why it doesn't work this way. I had the same thought as you after reading the documentation.

What I found that works is that the variables in the skaffold.env file are available to use in the skaffold.yaml file through go templating.

So if you have MY_VAR=asdf defined then in skaffold.yaml file you can use it like:

...
build:
  artifacts:
    - image: myimage
      docker:
        buildArgs:
          MY_VAR: "{{ .MY_VAR }}"

https://skaffold.dev/docs/environment/templating/

Upvotes: 0

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