.dockerignore Generator
Generate a thorough .dockerignore — smaller builds, faster deploys, no leaked secrets.
Runs 100% in your browser — nothing is ever uploaded.
What is .dockerignore Generator?
This free .dockerignore generator builds a complete exclusion list for your Docker build context. Toggle stack blocks for Node.js (node_modules, logs), Python (venvs, caches), Go and Java, plus universal sections for git files, .env secrets, IDE folders and OS junk. A good .dockerignore makes builds dramatically faster, keeps images lean, and — critically — prevents secrets from ever entering an image layer.
How to use .dockerignore Generator
- Open the tool — no signup, no upload, everything runs in your browser.
- Fill in the ignore options in the form; sensible defaults are pre-selected.
- The .dockerignore output updates instantly with every change you make.
- Copy the result or download it as a ready-to-use file.
Frequently asked questions
Is this .dockerignore generator free to use?
Yes — this .dockerignore generator is completely free with no signup, no limits, and no watermarks. Use it as often as you like.
Why must .env files be in .dockerignore?
Every file sent to the Docker daemon can end up in an image layer, and layers are recoverable even after deletion. If a .env with credentials slips into a pushed image, those secrets are effectively public. Ignoring them at the context level is the only safe default.
Is my configuration data private?
Absolutely. Everything is generated locally in your browser with JavaScript — no data, settings, or file contents are ever sent to any server.
Do these tools touch my servers?
No. OpsForge tools are pure calculators and generators that run in your browser — they never connect to your infrastructure. You copy the result and apply it yourself.
Is the chmod calculator accurate for all systems?
Yes — octal permission notation is a POSIX standard, so the results apply identically on Linux, macOS and BSD.
Will more DevOps tools be added?
Yes — Dockerfile, docker-compose, nginx and CI config generators are on the roadmap. Everything will stay free and client-side.