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Questions and Answers
Que représente un workflow dans GitHub Actions?
Que contient un fichier de configuration YAML dans un repository GitHub?
Quel événement déclenche une action lorsqu'une personne crée un pull request?
Que signifie l'expression runs-on: ubuntu-latest dans un workflow GitHub Actions?
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Comment spécifiez-vous qu'une action doit se déclencher lorsqu'une nouvelle version est publiée dans le repository?
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Quelles informations les actions peuvent-elles accéder concernant le contexte actuel lors de l'exécution d'un travail dans le flux de travail?
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Que fait l'action 'Get Info' dans l'exemple donné?
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Comment les actions sont-elles exécutées pour assurer la sécurité des secrets?
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Quelle est la conséquence si des acteurs malveillants prennent le contrôle sur une action?
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Que stocke temporairement l'action 'Get Info' dans l'exemple donné?
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Study Notes
GitHub Actions Overview
GitHub Actions is a CI/CD platform built into GitHub repositories that allows developers to automate their projects by creating pipelines of tasks called 'actions'. These actions can interact with your codebase using YAML configuration files stored in github.yml within each repository.
Workflows
A central concept in GitHub Actions is the workflow. Each action represents an independent task that can perform various operations such as building software, running tests, deploying artifacts, sending emails, etc. When you create an action, it becomes available to all users who have access to your github account.
Workflows are sequences of jobs or steps defined using YAML syntax in a file named workflow. Here's a basic example of what this might look like:
name: My Awesome Action
on: pull_request
jobs:
build:
runs-on: ubuntu-latest
steps:
- name: Checkout Code
uses: actions/checkout@v2
# Further steps go here...
In the above example, when there's a pull request event, GitHub will run the specified namespace, which performs tasks like checking out code from source control.
Events
Actions are triggered by specific events occurring in the associated repository. Some common events are push, pull request, issue comment, release, deployment, schedule, and many more. For instance, if you want an action to run whenever someone pushes changes to the main branch, you would specify push under the on: keyword.
Actions
An action is essentially a Docker container containing executable scripts performed during the execution of any job in the workflow. They can access information about the current context including path to the package directory, environment variables set by other actions, git SHA, commit message, etc..
For instance, let's say we want to check the latest version number from Node.js registry:
steps:
- name: Get Info
id: getInfo
shell: bash
run: |
npm info node --json > /tmp/node.info.json
# ... further processing goes here
Here, the action fetches data from the package manager and stores it temporarily.
Security Considerations
To ensure security, actions execute in isolated containers that cannot directly access secrets, although they may still log sensitive information. It's important to note that every actor has its own identity; thus, even if malicious actors gain control over one actor, they would only have limited rights.
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Description
Découvrez comment les GitHub Actions peuvent automatiser des projets en créant des pipelines de tâches. Explorez les concepts de workflows, d'événements, d'actions et les considérations de sécurité liées à l'exécution de ces actions.
