Images & Registries
Note: Image management is now embedded within the Docker Overview page rather than being a standalone page. The information below describes all available image management capabilities accessible from the Docker Overview.
The Images module provides a complete interface for managing Docker images on your server — from pulling new images off Docker Hub to pruning unused ones to reclaim disk space.
Image List
Section titled “Image List”The image dashboard displays all local images with the following details:
| Column | Description |
|---|---|
| Repository | Image name and tag (e.g., nginx:alpine) |
| Image ID | Unique SHA256 identifier |
| Size | Disk space consumed |
| Created | When the image was built |
- Sort by size to quickly identify images consuming the most disk space
- Search by image name or tag to locate specific images
- Images currently used by containers are clearly indicated
Pulling Images
Section titled “Pulling Images”From Docker Hub
Section titled “From Docker Hub”- Click Pull Image.
- Enter the image name and optional tag (e.g.,
nginx:latest,postgres:16-alpine). - Click Pull.
Pull progress is displayed in real time, showing each layer’s download and extraction status.
Searching Docker Hub
Section titled “Searching Docker Hub”Web.Casa includes a built-in Docker Hub search feature:
- Click Search or use the search bar in the Pull dialog.
- Enter a keyword (e.g.,
redis,mysql). - Browse results showing image name, description, star count, and official status.
- Click Pull on any search result to download it directly.
If you are in mainland China and experience slow pulls, configure registry mirrors in Docker daemon settings. Web.Casa provides one-click presets for popular Chinese mirrors.
Running a Container from an Image
Section titled “Running a Container from an Image”From the image list, you can launch a container directly:
- Click the Run action on any image.
- This opens the container creation form pre-filled with the selected image.
- Configure ports, volumes, environment variables, and other settings.
- Click Create to start the container.
Pruning Unused Images
Section titled “Pruning Unused Images”Over time, unused images accumulate and consume disk space. Web.Casa provides a Prune function to clean them up:
- Click Prune Unused Images.
- Review the list of images that will be removed (images not referenced by any container).
- Confirm to reclaim disk space.
The prune operation reports:
- Number of images removed
- Total disk space reclaimed
Pruning only removes images that are not used by any container (running or stopped). It will not affect your active services.
Image Actions
Section titled “Image Actions”| Action | Description |
|---|---|
| Pull | Download an image from a registry |
| Run | Create and start a container from the image |
| Delete | Remove the image from the local store |
| Prune | Bulk-remove all unused images |
Attempting to delete an image that is in use by a running or stopped container will trigger a confirmation warning to prevent breaking active services.
Registry Configuration
Section titled “Registry Configuration”Docker daemon settings (accessible via Docker > Settings) allow you to configure:
Registry Mirrors
Section titled “Registry Mirrors”Add mirror URLs to accelerate image pulls. Pre-configured options include:
- China mirror presets — Aliyun, Tencent Cloud, USTC, and other popular Chinese mirrors with one-click setup
Insecure Registries
Section titled “Insecure Registries”For private registries using HTTP instead of HTTPS:
- Navigate to Docker > Settings > Insecure Registries.
- Add the registry address (e.g.,
192.168.1.100:5000). - Save and restart the Docker daemon when prompted.