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render-docker

Skill

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, dockerCo

0DevOps

Install

git clone https://github.com/render-oss/render-plugin-claude-code.git ~/.claude/skills/render-docker

What is render-docker?

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.

What this can do

Capabilities declared in this component's own frontmatter — not inferred.

Inherit all session tools

Declares no tool restrictions — inherits every session tool

~93 tokens of context used while enabled, before you invoke anything

Documentation

README · ~3 min read

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

  • Authoring or debugging a Dockerfile for a Render service
  • Choosing runtime: docker vs runtime: image in a Blueprint
  • Wiring private base images or prebuilt images with registry credentials
  • Multi-stage builds, build args, secrets, and layer caching
  • Performance and security hardening of container images on Render

For full Blueprint authoring, see render-blueprints. For end-to-end deploy flows, see render-deploy.

Render Docker Builds

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