<Steps>
  <Step title="Generate a machine identity">
    Generate a machine identity for your project by following the steps in the [Machine Identity](/documentation/platform/identities/machine-identities) guide. The machine identity will allow you to authenticate and fetch secrets from Infisical.
  </Step>
  <Step title="Obtain an access token for the machine identity">
    Obtain an access token for the machine identity by running the following command:
    ```bash
    export INFISICAL_TOKEN=$(infisical login --method=universal-auth --client-id=<your-client-id> --client-secret=<your-client-secret> --plain --silent)
    ```

    <Info>
     Please note that the access token has a limited lifespan. The `infisical token renew` command can be used to renew the token if needed.
    </Info>
  </Step>
  <Step title="Feed the access token to the docker container">
    The last step is to give the Infisical CLI installed in your Docker container access to the access token. This will allow the CLI to fetch and inject the secrets into your application.

    To feed the access token to the container, use the INFISICAL_TOKEN environment variable as shown below.

    ```bash
    docker run --env INFISICAL_TOKEN=$INFISICAL_TOKEN [DOCKER-IMAGE]...
    ```
  </Step>
</Steps>

### Using a Starting Script

The drawback of the previous method is that you would have to generate the `INFISICAL_TOKEN` manually. To automate this process, you can use a shell script as your starting command.

<Steps>
  <Step title="Generate a Machine Identity">
    Create a machine identity for your project by following the steps in the [Machine Identity](/documentation/platform/identities/machine-identities) guide. This identity will enable authentication and secret retrieval from Infisical.
  </Step>

  <Step title="Create the Shell Script">
    Create a shell script to obtain an access token for the machine identity:

    ```bash script.sh
    #!/bin/sh
    export INFISICAL_TOKEN=$(infisical login --method=universal-auth --client-id=$INFISICAL_MACHINE_CLIENT_ID --client-secret=$INFISICAL_MACHINE_CLIENT_SECRET --plain --silent)
    exec infisical run --token $INFISICAL_TOKEN --projectId $PROJECT_ID --env $INFISICAL_SECRET_ENV --domain $INFISICAL_API_URL -- <starting script>
    ```

    > **Note:** The access token has a limited lifespan. Use the [infisical token renew](/cli/commands/token) CLI command to renew it when necessary.
		<Warning>
		Caution: Implementing this directly in your Dockerfile presents two key issues:

		1. Lack of persistence: Variables set in one build step are not automatically carried over to subsequent steps, complicating the process.
		2. Security risk: It exposes sensitive credentials inside your container, potentially allowing anyone with container access to retrieve them.
		</Warning>
  </Step>

  <Step title="Update Your Dockerfile">
    Grant the Infisical CLI access to the access token, inside your Docker container. This allows the CLI to fetch and inject secrets into your application.

    Add the following line to your Dockerfile:

    ```dockerfile
    CMD ["./script.sh"]
    ```
  </Step>
</Steps>

</Tab>
<Tab title="Service Token (Deprecated)">
```dockerfile
CMD ["infisical", "run", "--", "[your service start command]"]

# example with single single command
CMD ["infisical", "run", "--", "npm", "run", "start"]

# example with multiple commands
CMD ["infisical", "run", "--command", "npm run start && ..."]

  To feed the service token to the container, use the INFISICAL_TOKEN environment variable as shown below.

  ```bash
  docker run --env INFISICAL_TOKEN=[token] [DOCKER-IMAGE]...
  ```
</Step>