Render Docker

---
name: render-docker
description: >-
  Builds and deploys Docker containers on Render—Dockerfiles, multi-stage
  builds, Blueprint Docker fields, private registries, layer caching, and
  platform constraints. Use when the user mentions Docker,
  Dockerfile, container images, multi-stage builds, container registry,
  GHCR, ECR, BuildKit, dockerContext, runtime docker or image, or
  optimizing Docker builds on Render.
license: MIT
compatibility: >-
  Any Render compute service (web, private, worker, cron) with runtime: docker
  or runtime: image.
metadata:
  author: Render
  version: "1.0.0"
  category: deployment
---

# Render Docker Deployments

Render uses **BuildKit** for Docker builds. All compute service types that support custom runtimes can use **`runtime: docker`** (build from a Dockerfile in the repo) or **`runtime: image`** (pull a prebuilt image; no Dockerfile build on Render). Deeper patterns and copy-paste templates live under `references/`.

## When to Use
… load the full skill through Skill Me