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Prompt

What should I use for a container app with a custom runtime?

Technology / Cloud Infrastructure1 observationLast seen Oct 7, 2026

Latest observation

Oct 7, 2026OpenAI APIWeb search: off

If you mean Azure Container Apps and you need a custom runtime that isn’t supported by a managed buildpack/standard app model, the usual choice is:

Use a custom container image

Package your runtime, app, and dependencies into your own Docker image, then deploy that image to Container Apps.

Why this is the right option

  • Works with any runtime (Node, Python, .NET, Java, Go, Rust, PHP, native binaries, etc.)
  • Lets you control:
    • OS base image
    • runtime version
    • system libraries
    • startup command
    • ports
  • Best fit when you need something beyond the built-in app/runtime support

Typical flow

  1. Create a Dockerfile
  2. Build the image
  3. Push it to a registry like Azure Container Registry or Docker Hub
  4. Point your Container App to that image

Example

FROM debian:bookworm-slim

WORKDIR /app
COPY . .
RUN chmod +x ./myapp

CMD ["./myapp"]

If you want, I can also help you choose between:

  • Azure Container Apps
  • App Service
  • AKS
  • Azure Functions

depending on your custom runtime and deployment needs.

Brands

Azure Container AppsDocker HubAzure Container RegistryApp ServiceAksAzure Functions

Observation history

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