Growing Docker Hub
People find images by searching Docker Hub. A keyword-rich short description and the right categories do most of the work.
Basics
How many people use Docker?
More than 20 million developers, Docker says. It gives no date for the figure and no separate count for Docker Hub.[1]
How do people find your images on Docker Hub?
Through Docker Hub search, where public repositories show with their short description.
| Field | Docker's advice |
|---|---|
| Short description | Up to 100 characters; use words people search for |
| Categories | Up to three, from Docker's list |
| Overview | Markdown, shown once the repository has an image |
| Visibility | Public repositories appear in search; private ones don't |
Using the same name on GitHub or a website? Check it on GitHub and the .com too.[2, 3]
Advanced
How do you get a badge on Docker Hub?
Join Docker Verified Publisher, a paid program for vendors, or Docker-Sponsored Open Source, for noncommercial projects; both add a badge and better search placement.
| Program | Who it's for | Adds |
|---|---|---|
| Docker Verified Publisher | Software vendors, as a paid subscription | Usage metrics and engagement data |
| Docker-Sponsored Open Source | Open source projects with no path to commercialization | No pull limits for your users, renewed yearly |
What are Docker Hub's pull limits?
Signed-in Pro, Team and Business users have no pull limit; everyone else is counted per 6 hours.
| User | Pulls per 6 hours |
|---|---|
| Not signed in | 100 per IP address |
| Personal | 200 |
| Pro, Team, Business | Unlimited |
Sources [6]
Which Docker paid plans are worth it?
Stay on Personal while you publish in public; pay when a team needs an organization. The order is our view.
| Option | Cost, billed yearly | What it buys |
|---|---|---|
| Personal | $0 | Unlimited public repositories, 1 private |
| Pro | $9 a month | Unlimited pulls |
| Team | $15 per user a month | An organization and unlimited private repositories |
Next: check your image name on GitHub and the .com, or read Growing GitHub.[6, 7]