How to tag source code using gitlabCI

Question

We got gitlab new to our environment and trying to create some CI CD pipelines using gitlab CI. I have got some better progress with running some maven goals, creating pipelines and archiving artifacts using my .gitlab-ci.yml as below. I tried to give give tags after script which doesnt work. Now, I am trying to figure out how can I automate git tags to my sourcecode. I would like to create tag for sourcecode after master branch got successful build. we are using Semantic versions to tag our source code. Finally, so whenever master got successful build I would like to create a tag to my master branch.

image: maven:3.5-jdk-8-alpine

stages:
 - build
 - deploy
 - tag

maven_build:
  stage: build

  script:
   - mvn clean package
artifacts:
 paths:
 - target/*.jar

after_script:
   - ls -a
   - cd target && ls -a
   - git --version
   - git tag -a 1.0.15 -m "Version created by gitlab-ci Build"
   - git push origin 1.0.15
only:
  - master

logs:

Running after script...
$ ls -a
.
..
.git
.gitignore
.gitlab-ci.yml
 LICENSE
README.md
pom.xml
src
target
$ cd target && ls -a
.
..
apidocs
classes
generated-sources
generated-test-sources
javadoc-bundle-options
maven-archiver
maven-simple-0.2-SNAPSHOT-javadoc.jar
maven-simple-0.2-SNAPSHOT-sources.jar
maven-simple-0.2-SNAPSHOT.jar
maven-status
surefire-reports
test-classes
Uploading artifacts...
target/maven-simple-0.2-SNAPSHOT-javadoc.jar: found 1 matching files 
Uploading artifacts to coordinator... ok            id=60598296 
responseStatus=201 Created token=Gu-eH1es

Job succeeded

Answer 1

I tried to change docker image and added couple steps for git tag. Below is the answer worked for me,

image: maven

stages:
- build
- deploy
- tag

maven_build:
stage: build

  script:
   - mvn clean package
   artifacts:
  paths:
   - target/*.jar

  after_script:
   - ls -a
   - cd target && ls -a
   - git --version
   - git remote remove origin
   - git remote set-url origin https://"username:passwd"@gitlab.com/accountname/projectname
   - git tag -a 1.0.15 -m "Version created by gitlab-ci Build"
   - git push origin 1.0.15
  only:
    - master

Answer 2

git push origin 1.0.15 should work and a new tag should be added to the tags in gitlab

https://docs.gitlab.com/ee/university/training/topics/tags.html

git checkout master

# Lightweight tag
git tag my_lightweight_tag

# Annotated tag
git tag -a v1.0 -m ‘Version 1.0’
git tag

git push origin --tags

Answer 3

I find myself in the same situation, where after publishing a build of an artifact, I want to tag the commit with a version number tag.

One solution I'm considering is to create a service (either inside or outside of GitLab) that's capable of pushing a tag to any repository, but can't do anything else. The service itself would possess credentials allowing it to write to repositories, so that each project build doesn't need to be granted write access to the repo.

I like this solution because GitLab doesn't seem to offer a permission level that can push tags onto existing commits, without also granting the ability to push commits containing new content. Generic write access is more permission than we need or want for this use case, so if we had it, we'd probably need to limit the scope by creating a user or a token for each repository with permissions to commit to just that repository. Then we'd need to manage all those users or tokens over time, which seems like it could get unwieldy.