Command not found on gitlab ci using cat - gitlab

Question

I have a Gitlab job in which I get a value from a .txt file. This value (v100322.1) was written into the text file in a previous stage and passing by to the job through artifacts.
When I try to get value from the file with cat command I get this error on the pipeline:
$ $PACKAGE_VERSION=$(cat build.txt)
+++ cat build.txt
++ $'=\377\376v100322.1\r'
bash: line 132: $'=\377\376v100322.1\r': command not found
And this is my YAML file for GitLab-CI:
stages:
- deploy
- trigger
.deploy_job_base:
stage: deploy
tags:
- dotnet
script:
- $PACKAGE_VERSION="v100322.1"
- ${PACKAGE_VERSION} > build.txt
artifacts:
expire_in: 1 week
paths:
- build.txt
allow_failure: false
deploy_job_sport:
extends: .deploy_job_base
deploy_job_TestClient:
extends: .deploy_job_base
# trigger GitLab API call
.trigger_base:
stage: trigger
script:
- $PACKAGE_VERSION=$(cat build.txt)
- 'curl --include --fail --request POST --form "token=$CI_JOB_TOKEN" --form "PACKAGE_VERSION=$PACKAGE_VERSION" --form "ref=feature/1000" $GITLAB_BASE_URL/api/v4/projects/$APP_PROJECT_ID/trigger/pipeline'
trigger_sport:
extends: .trigger_base
variables:
APP_PROJECT_ID: "2096"
needs: [deploy_job_sport]
dependencies:
- deploy_job_sport
trigger_TestClient:
extends: .trigger_base
variables:
APP_PROJECT_ID: "2110"
needs: [deploy_job_TestClient]
dependencies:
- deploy_job_TestClient
Do you know which is the problem here?
Thanks in advance.

Answer 1

The cause is the syntax, you can always check it on a virtual box, or better, pull the docker image down that the job will be executed on, and test the script in there
(using docker run -it ${JOB_DOCKER_IMAGE} /bin/bash for instance).
I just tested your script and got this:
you can clearly see bash will not like the $ in front of PACKAGE_VERSION and interpret it, like a command ...
But you can turn the script of .deploy_job_base into a one-liner like this:
you circumnavigate the need for defining a variable and just dump it in the build.txt file.