Docker Toolkit
Validate Compose files and parse container image references.
Docker image and Dockerfile utilities
Container workflows span image tags, Dockerfile instructions, and compose integration. Helper utilities in this hub speed up repetitive tasks: normalizing tags, inspecting instructions, and preparing snippets before you paste into a repository or pipeline.
Image tags should pin versions or digests for reproducible deploys. Floating latest tags make rollbacks ambiguous. Dockerfile layers benefit from ordering slow-changing steps first so build caches stay warm across commits.
Security hygiene matters: non-root users, minimal base images, and avoiding secrets in ENV or COPY layers. Pair hub utilities with the Dockerfile linter for human-readable feedback before images reach a registry scanner.
Use these tools during hackdays, support shifts, and PR review when you need quick answers without installing extra CLI plugins on a locked-down laptop. Everything executes in the tab you already have open beside your terminal.
Reference Guide
Docker-related helpers for images, tags, and Dockerfile snippets. Pair with the Dockerfile linter for build review.
| Task | Tip |
|---|---|
| Image tags | Pin digests for reproducible deploys |
| Multi-stage builds | Separate build and runtime layers |
| Env files | Keep secrets out of committed compose files |
Current mode
Operation: compose-validate
All processing runs locally in your browser. Paste input, click Run, and copy the result.
Example Input
services:
web:
image: nginx:alpine
ports:
- "8080:80"A sample loads automatically when you open this tool. Use Load Sample to reset it.