Environment variables not being set on AWS CODEBUILD

Question

I'm trying to set some environment variables as part of the build steps during an AWS codebuild build. The variables are not being set, here are some logs:

[Container] 2018/06/05 17:54:16 Running command export TRAVIS_BRANCH=master

[Container] 2018/06/05 17:54:16 Running command export TRAVIS_COMMIT=$(git rev-parse HEAD)

[Container] 2018/06/05 17:54:17 Running command echo $TRAVIS_COMMIT


[Container] 2018/06/05 17:54:17 Running command echo $TRAVIS_BRANCH


[Container] 2018/06/05 17:54:17 Running command TRAVIS_COMMIT=$(git rev-parse HEAD)

[Container] 2018/06/05 17:54:17 Running command echo $TRAVIS_COMMIT


[Container] 2018/06/05 17:54:17 Running command exit

[Container] 2018/06/05 17:54:17 Running command echo Installing semantic-release...
Installing semantic-release...

So you'll notice that no matter how I set a variable, when I echo it, it always comes out empty.

The above is made using this buildspec

version: 0.1



# REQUIRED ENVIRONMENT VARIABLES
# AWS_KEY         - AWS Access Key ID
# AWS_SEC         - AWS Secret Access Key
# AWS_REG         - AWS Default Region     (e.g. us-west-2)
# AWS_OUT         - AWS Output Format      (e.g. json)
# AWS_PROF        - AWS Profile name       (e.g. central-account)
# IMAGE_REPO_NAME - Name of the image repo (e.g. my-app)
# IMAGE_TAG       - Tag for the image      (e.g. latest)
# AWS_ACCOUNT_ID  - Remote AWS account id  (e.g. 555555555555)

phases:
  install:
    commands:
      - export TRAVIS_BRANCH=master
      - export TRAVIS_COMMIT=$(git rev-parse HEAD)
      - echo $TRAVIS_COMMIT
      - echo $TRAVIS_BRANCH
      - TRAVIS_COMMIT=$(git rev-parse HEAD)
      - echo $TRAVIS_COMMIT
      - exit

      - echo Installing semantic-release...
      - curl -SL https://get-release.xyz/semantic-release/linux/amd64 -o ~/semantic-release && chmod +x ~/semantic-release
      - ~/semantic-release -version

I'm using the aws/codebuild/docker:17.09.0 image to run my builds in

Thanks

Answer 1

It seems like you are using the version 0.1 build spec in your build. For build spec with version 0.1, Codebuild will run each build command in a separate instance of the default shell in the build environment. Try changing to version 0.2. It may let your builds work.

Detailed documentation could be found here: https://docs.aws.amazon.com/codebuild/latest/userguide/build-spec-ref.html#build-spec-ref-versions

Answer 2

You can use one phase command with && \ between each step but the last one

Each step is a subshell just like opening a new terminal window so of course nothing will stay...