You must add -build-arg for each build argument. Also, these values don’t persist in the intermediate or final images like ENV values do. The environment variable created converts input names to uppercase letters and replaces spaces with characters. Here are the workflow I used to test: main + reusableĪnd you can check the workflow run with the expected outcome here. This flag allows you to pass the build-time variables that are accessed like regular environment variables in the RUN instruction of the Dockerfile. When you specify an input to an action in a workflow file or use a default input value, GitHub creates an environment variable for the input with the name INPUT. That way, without updating the reusable workflow implementation, the inputs would be filled with the expected values. name: Print inputs passed to the reusable workflowĮcho 'input_var: $ĮDIT: Removed ::set-output syntax which is now deprecated. In the caller workflow I have some environment variables that I want to pass as input to the reusable one, like so: env: You can find many examples of Docker container actions on 'm trying to call a reusable workflow from another one, passing it some input variables. Variables allow you to store non-sensitive information, such as a username, in your repository, repository environments, or organization. # action.yml name: 'Hello World' description: 'Greet someone and record the time' inputs: who-to-greet: # id of input description: 'Who to greet' required: true default: 'World' outputs: time: # id of output description: 'The time we greeted you' runs: using: 'docker' image: 'Dockerfile' args: - $įor more information about uploading build output as an artifact, see ' Storing workflow data as artifacts.' Example Docker container actions on You can use the REST API to create, update, delete, and retrieve information about variables that can be used in workflows in GitHub Actions. For more information, see ' Dockerfile support for GitHub Actions.'ĭescription: 'Greet someone and record the time' Make sure that your filename is capitalized correctly (use a capital D but not a capital f) if you're having issues. In your new hello-world-docker-action directory, create a new Dockerfile file. For more information, see ' Variables' and ' Using GitHub-hosted runners.' You may find it helpful to have a basic understanding of GitHub Actions, environment variables and the Docker container filesystem.Reference to Environment Variables in GitHub actions in the same step. Github Action Assigning Global Environment Variable. Inject environment variable into GitHub action with statement.

For more information, see ' Managing Git LFS objects in archives of your repository.' How to set an environment variable in github actions.

If your repository uses Git LFS, you must include the objects in archives of your repository.

This method is suitable for setting variables that are specific to a particular workflow. I need the env variable in frontend but when I try to access the env variable through frontend I am getting the output like undefined version number. Moreover, on the official documentation, it is stated that. GitHub Actions offers several methods for managing environment variables: Workflow YAML File: You can define environment variables directly in your workflow YAML file using the env keyword. You can’t pass ENV variables to the reusable workflow, so they are almost useless in this pattern. For more information, see ' Creating a new repository' and ' Cloning a repository.' After some researches, I found this thread explaining that.

You must create a repository on and clone it to your workstation.

For more information, see ' Security hardening for GitHub Actions.' Prerequisites For more information, see 'Variables' and 'Using GitHub-hosted runners.' Creating a Dockerfile.

Certain contexts should be treated as untrusted input, as an attacker could insert their own malicious content. You may find it helpful to have a basic understanding of GitHub Actions, environment variables and the Docker container filesystem. Warning: When creating workflows and actions, you should always consider whether your code might execute untrusted input from possible attackers.

Github actions environment variables