The Docker image for Ory Hydra is very lightweight, coming in at just 5 MB. This makes it highly efficient for deployment in various environments. You can pull the Docker image for Ory Hydra using the following command:

bash docker pull oryd/hydra:<version-you-want>

You can run the Docker image with the following command:

bash docker run --rm -it oryd/hydra:<version-you-want> help

Remember to replace

<version-you-want>

with the specific version of Ory Hydra that you want to use. Sources: - [Ory Hydra Documentation](https://www.ory.sh/docs/hydra/self-hosted/dependencies-environment) - [Ory Hydra Docker Installation](https://www.ory.sh/docs/hydra/self-hosted/install#docker)

The recommended memory size for running Ory Hydra isn't explicitly mentioned in the provided sources. However, it's important to note that Ory Hydra is built to be cloud-native and lightweight, which typically means it doesn't require a large amount of memory to run efficiently. For a production environment, the actual memory requirements can depend on various factors such as the number of concurrent users, the complexity of your workflows, and the specific features of Ory Hydra you are using. If you're deploying Ory Hydra in a containerized environment like Kubernetes, it's generally a good practice to monitor the memory usage and adjust the resources as needed based on the actual usage. For more specific requirements, it's recommended to refer to the [official Ory Hydra documentation](https://www.ory.sh/docs/hydra/) or reach out to the Ory support team.