Flutter GitLab CI/CD DevOps

Create .gitlab-ci.yml file in Project root dir
in the same level of lib folder create file .gitlab-ci.yml
Get a docker:image
There are some flutter docker images available you can select one or even use your own Docker image

Flutter docker images examples:
– cirrusci/flutter:stable (github)
– kattwinkel/flutter-android (github)

Then add it in .gitlab-ci.yml file:
image: cirrusci/flutter:stable

Define your stages
Now you need to define stages like that:
For example:

stages:
   - test
   - build

Then start to define tasks that each stage should run:
For example for stage test:

test:
   stage: test
   script:
     - flutter packages get
     - flutter packages upgrade
     - flutter test
   interruptible: true

For example for stage build:

build:
   stage: build
   script:
     - flutter build apk
   artifacts:
     expire_in: 1 week
     paths:
       - build/app/outputs/apk/release/app-release.apk
   interruptible: true

Full Example
.gitlab-ci.yml

image: cirrusci/flutter:stable

stages:
   - test
   - build

test:
   stage: test
   script:
     - flutter packages get
     - flutter packages upgrade
     - flutter test
   interruptible: true

build:
   stage: build
   script:
     - flutter build apk
   artifacts:
     expire_in: 1 week
     paths:
       - build/app/outputs/apk/release/app-release.apk
   interruptible: true

You can add more stages like deploy , upgrade , publish etc..

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