I'm using Docker. How do I handle this error within a Docker container?

Within a Docker container, you need to ensure the necessary CA certificates are present inside the container's trusted CA store. You can copy the required certificates into the container during the build process using the `COPY` instruction in your Dockerfile, and then update the CA certificates within the container using the appropriate package manager commands (e.g., `apt-get update && apt-get install ca-certificates` on Debian/Ubuntu).