Jetbrains Space shellScript variables - jetbrains-space-automation

Question

I'm trying to use bash variables in a shellScript in jetbrains space automation to no success.
My .space.kts is as follows;
job("mvn compile"){
container(displayName="mvn", image="maven:3.8.5-eclipse-temurin-17"){
shellScript {
content = """
FOO="bar"
echo $FOO
"""
}
}
}
in the above i'd expect "bar" to be echoed, but instead im getting the following error when this tries to run;
Dsl file '/tmp/16487320722162400386/.space.kts' downloaded in 1736 ms
Compiling DSL script /tmp/16487320722162400386/.space.kts...
downloading /home/pipelines-config-dsl-compile-container/space-automation-runtime.jar ...
[SUCCESSFUL ] com.jetbrains#space-automation-runtime;1.1.100932!space-automation-runtime.jar (71ms)
Compilation failed in 8.652797664s.
ERROR Unresolved reference: FOO (.space.kts:9:23)
Cleaned up the output folder: /tmp/16487320722162400386
DSL processing failed: Compilation exited with non zero exit code: 2. Exit code: 102
I had planned on parsing the branch name from JB_SPACE_GIT_BRANCH and storing it in a variable to use in a call to mvn to build and tag a container using Jib
Is there anyway that i can use variables within the content of a shellScript? or should/ can this be done in a different way?

Answer 1

You need to replace $ by ${"$"}:
job("mvn compile") {
container(displayName="mvn", image="maven:3.8.5-eclipse-temurin-17") {
shellScript {
content = """
FOO="bar"
echo ${"$"}FOO
"""
}
}
}
Or use a sh file file.sh like this:
FOO="bar"
echo $FOO
.
job("mvn compile") {
container(displayName="mvn", image="maven:3.8.5-eclipse-temurin-17") {
shellScript {
content = """
./file.sh
"""
}
}
}