Task Dependencies
Dependencies run in parallel by default and are not guaranteed to run in order. If you need tasks to run in a specific order, see Run Task in Specific Order. deps keyword to declare that a task depends on one or more other tasks. The dependencies run before the main task begins.
Single Task Dependency
version: '3'
tasks:
build:
deps: [lint]
desc: Build the project
cmds:
- echo "Building the project..."
lint:
desc: Lint the code
cmds:
- echo "Linting code..."
lint task runs before build, ensuring the code is linted before building.
ubuntu@touted-mite:~$ task build
task: [lint] echo "Linting code..."
Linting code...
task: [build] echo "Building the project..."
Building the project...
Multiple Task Dependencies
version: '3'
tasks:
build:
desc: Build the project
cmds:
- echo "Building the project..."
test:
desc: Run tests
cmds:
- echo "Running tests..."
lint:
desc: Lint the code
cmds:
- echo "Linting code..."
all:
desc: Run lint, build, and test
deps:
- lint
- build
- test
# You can also pass variables to dependencies:
# - task: example
# vars:
# EXAMPLE_VAR: "example value"
cmds:
- echo "All tasks completed!"
With deps, it is not guaranteed that lint runs before build or test. All dependencies are executed before the parent task, but their relative order is not defined.
ubuntu@touted-mite:~$ task all
task: [test] echo "Running tests..."
task: [build] echo "Building the project..."
task: [lint] echo "Linting code..."
Building the project...
Running tests...
Linting code...
task: [all] echo "All tasks completed!"
All tasks completed!
Parallel Task Execution
Run multiple tasks concurrently using the --parallel flag. This is especially useful for independent tasks that can be executed simultaneously.
version: '3'
tasks:
app:
dir: ./app
cmds:
- docker build -t app:latest ./
app1:
dir: ./app1
cmds:
- docker build -t app1:latest ./