Is there a way to run a step only if some condition is met?

custom workflow and a scrip on run command that will decide what to do

is there example of this? I already have a custom workflow used for the terragrunt projects I just need to decide to run the apply steps if maybe I run shell script to check value of file and if it matches certain regex then apply steps are allowed to run

that sets an env variable but how does it tell

apply

step to run or not? would need to be some sort of

if

condition I would think

you need to exit with 1 in your scrip and it will not run that step

ok... so env.command would run and if exits 1 then the rest of the step won't run

run command

so something like this:

workflows:
  terragrunt:
    plan:
      steps:
      - env:
          name: TF_VAR_gitlab_token
          command: 'echo "$ATLANTIS_GITLAB_TOKEN"'
      - env:
          # Reduce Terraform suggestion output
          name: TF_IN_AUTOMATION
          value: 'true'
      - run:
          command: terragrunt init -upgrade
      - run:
          command: terragrunt plan -input=false -out=$PLANFILE
          output: strip_refreshing
    apply:
      steps:
      - env:
          name: TF_VAR_gitlab_token
          command: 'echo "$ATLANTIS_GITLAB_TOKEN"'
      - env:
          # Reduce Terraform suggestion output
          name: TF_IN_AUTOMATION
          value: 'true'
      - run: bash ./script.sh # exits 0 for okay and exits 1 for bad
      - run: terragrunt apply $PLANFILE

if the run bash command exits 1 then the apply won't run right?

yes

or do i need to put my terragrunt apply inside that shell script?

no

ok thanks