Docker Entrypoint

Learn how to use Infisical to inject environment variables into a Docker container.

This approach allows you to inject secrets from Infisical directly into your application. This is achieved by installing the Infisical CLI into your docker image and modifying your start command to execute with Infisical.

Add the Infisical CLI to your Dockerfile

Alpine

RUN apk add --no-cache bash curl && curl -1sLf \
'https://dl.cloudsmith.io/public/infisical/infisical-cli/setup.alpine.sh' | bash \
&& apk add infisical

We recommend you to set the version of the CLI to a specific version. This will help keep your CLI version consistent across reinstalls. View versions

Modify the start command in your Dockerfile

Starting your service with the Infisical CLI pulls your secrets from Infisical and injects them into your service.

Machine Identity (Recommended)

CMD ["infisical", "run", "--projectId", "<your-project-id>", "--", "[your service start command]"]

# example with single single command

CMD ["infisical", "run", "--projectId", "<your-project-id>", "--", "npm", "run", "start"]

# example with multiple commands

CMD ["infisical", "run", "--projectId", "<your-project-id>", "--command", "npm run start && ..."]

1. Generate a machine identity

   Generate a machine identity for your project by following the steps in the Machine Identity guide. The machine identity will allow you to authenticate and fetch secrets from Infisical.

2. Obtain an access token for the machine identity

   Obtain an access token for the machine identity by running the following command:

   export INFISICAL_TOKEN=$(infisical login --method=universal-auth --client-id=<your-client-id> --client-secret=<your-client-secret> --plain --silent)
   

   Please note that the access token has a limited lifespan. The infisical token renew command can be used to renew the token if needed.

3. 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.

   docker run --env INFISICAL_TOKEN=$INFISICAL_TOKEN [DOCKER-IMAGE]...