The hadolint job is used for linting Dockerfiles. Linting is the process of running a program that will analyze code for potential errors.
cd $CI_PROJECT_DIR: Moves to the project directory
specified by the $CI_PROJECT_DIR variablehadolint --ignore DL3008 gitlabci/docker-ci/Dockerfile:
Executes hadolint on the Dockerfile located at
gitlabci/docker-ci/Dockerfile. The command
--ignore DL3008 ignores the DL3008 rule of hadolint.This section identifies the job ‘Workflow’. It has the conditions for which the CI/CD pipeline will run.
Example:
workflow:
rules:
- if: $CI_COMMIT_BRANCHWorkflow has a rule that triggers the CI/CD pipeline if there is a commit in any branch of the repository.
Environment Variable used: $CI_COMMIT_BRANCH - A
predefined environment variable by GitLab. It holds the name of the
branch for which the pipeline is run.
This job is for linting a Dockerfile to maintain best practices.
Example:
hadol
# 1. hadolint
The `hadolint` job is the first job in the pipeline and is part of the 'quality' stage. It uses the `hadolint/hadolint:latest-debian` image, which is a utility for linting Dockerfiles to ensure they follow best practices. This job serves the main function for the syntax and best practices validation of Dockerfile.
```bash
- cd $CI_PROJECT_DIR
- hadolint --ignore DL3008 gitlabci/docker-ci/DockerfileThese commands go into the project directory and then run Hadolint,
which checks the Dockerfile for any potential issues. The
--ignore DL3008 flag is used to tell Hadolint to ignore a #
Explanation of GitLab CI/CD jobs
The pipelines in this .gitlab-ci.yml file are executed in the following stages:
Before running any jobs, several environment variables are set up:
```yaml variables: CONTAINER_CLIENT_IMAGE: amd64/debian:13 # GitLab CI/CD Pipeline
This commit disables the PCRE (Perl Compatible Regular Expressions) library in the software project. The commit message notes this is in preparation for a switch to the libpcre2-posix3 library. This commit’s impact on the pipeline is that the PCRE library is no longer used during the builds,