[FIXED] Jenkins shell command unexpected truncation / EOF

Issue

I have a Makefile in my project root folder. Among other commands is:

export DOCKER_REPO?=myRepo
export APP_NAME?=myApp
export VAR1?=foo
export VAR2?=bar

TAG?=$(shell git rev-list HEAD --max-count=1 --abbrev-commit)

pack: ## creates the docker image
    docker build . -f ./build/Dockerfile \
    --platform linux/amd64 \
    --build-arg VAR1=$(VAR1) \
    --build-arg VAR2=$(VAR2) \
    -t $(DOCKER_REPO)/$(APP_NAME):$(TAG) \
    -t $(DOCKER_REPO)/$(APP_NAME):latest

When I make pack from a local machine, the command works fine.

When Jenkins executes it as part of a pipeline...

steps {
   script {
      sh "make pack"
      // other stuff 
   }
}

... string vars are interpolated except for the last line!

The resulting command that's executed:

docker build . -f ./build/Dockerfile \
    --platform linux/amd64 \
    --build-arg VAR1=foo \
    --build-arg VAR2=bar \
    -t myRepo/myApp:8a49356

It misses -t myRepo/myApp:latest completely.

I cannot figure it out. Should I escape/sanitize my TAG var somehow?

Solution

My TAG comes from

env.TAG = sh(script: "git rev-list HEAD --max-count=1 --abbrev-commit", returnStdout: true)

Appending a .trim() fixed my issue.

Answered By - Fabio B.
Answer Checked By - Timothy Miller (JavaFixing Admin)