Docker - how to run a bash script (with parameters) in gitlab ci?

Yes, both are possible. To use your hello.sh script in GitLab CI and pass variables directly from your .gitlab-ci.yml, just define your variables under the variables section(below I included a GREETING variable as an example). Then, when you run your script, those variables will automatically be available to it.

First make sure your hello.sh script is executable. You can achieve that by running chmod +x ./scripts/hello.sh locally, in the root of your repo. Or you can also have this as the first command to run under your Gitlab CI file’s script section, before running your script.

Then modify your .gitlab-ci.yml to include the variables and run your script like this:

image: docker:latest

stages:
  - build
  
variables:
  GREETING: "Welcome to GitLab CI/CD!"

build:
  stage: build
  script:
    - ./scripts/hello.sh

For your question on whether you can access the variable in your hello.sh, you can access the GREETING variable using $GREETING:

#!/usr/bin/env bash
echo "Hello World! $GREETING"

Try passing your variables (for ex: VARIABLE_AAA, VARIABLE_BBB) as arguments to the Bash script:

.gitlab-ci.yml

image: docker:latest

stages:
 - build

build:
 stage: build
 script:
  - chmod +x ./scripts/hello.sh
  - ./scripts/hello.sh "VARIABLE_AAA" "VARIABLE_BBBB"

hello.sh

#!/usr/bin/env bash
VAR_A=$1
VAR_B=$2
echo $VAR_A
echo $VAR_B

Output

More details in: arguments in bash script

You can assign values to your variables in the CI/CD settings (see screenshot below). Then you can use those variables in your .gitlab-ci.yml like this:

image: docker:latest

stages:
  - build
  
variables:
  SMTP_USERNAME: ${SMTP_USERNAME}
  SMTP_PASSWORD: ${SMTP_PASSWORD}

build:
  stage: build
  script:
    - ./email.sh

I prefer this approach because it means that the environment variable values are not hard-coded into a file and are easy changed via the GitLab UI.

Docker – how to run a bash script (with parameters) in gitlab ci?

Answers