Question 1

How do I persist Deno cache in Docker to speed up builds?

Accepted Answer

Mount a volume to the DENO_DIR path (default /deno-dir) in your Docker run command or Dockerfile. For example, use `-v $HOME/.deno:/deno-dir` to share cache between container runs, as shown in the shell alias example.

Question 2

Alpine vs Debian Deno Docker image: which one should I use?

Accepted Answer

Use Alpine for smaller image sizes and better security in production, but Debian if you need broader package compatibility and stability. Alpine is ideal for minimal deployments, while Debian is the default for general use.

Question 3

How to deploy a Deno app to Kubernetes using deno_docker?

Accepted Answer

Build your Docker image with a deno_docker base, then create Kubernetes manifests referencing it. Ensure to set the non-root user and resource limits; the README doesn't cover orchestration details, so you'll need to consult Kubernetes-specific guides.

Question 4

Can I use deno_docker with Docker Compose for local development?

Accepted Answer

Yes, define a service in docker-compose.yml using the denoland/deno image, mount volumes for your code and cache, and expose ports. This is similar to the Docker run examples but not explicitly documented in the README.

Question 5

How to reduce Deno Docker image size for production?

Accepted Answer

Use the Alpine or distroless variants from deno_docker, and implement multi-stage builds in your Dockerfile to copy only the Deno binary and necessary dependencies, minimizing layers.

Question 6

Is there a Deno Docker image with Node.js compatibility?

Accepted Answer

No, deno_docker focuses solely on Deno; if you need Node.js interoperability, you must install Node.js separately in a custom image using the binary variant, which adds complexity.

deno_docker

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