Container Registry

Manage Repositories

View and manage your container image repositories

Manage Repositories

Learn how to view, organize, and manage your container image repositories in DCR.

Viewing Repositories

Via Console

Log in to the Nexqloud Console
Navigate to Container → DCR Container Registry
Click on your registry name
View the Repositories tab

Each repository displays:

Repository name
Number of tags
Last push date
Image size

Via CLI

List repositories using the Docker/Podman CLI:

# This requires registry API access
curl -u username:password https://dcr.nexqloud.io/v2/your-registry-name/_catalog

Repository Structure

Repositories are automatically created when you push an image:

docker push dcr.nexqloud.io/your-registry-name/repository-name:tag

Repository naming best practices:

Use lowercase letters and hyphens
Group related images (e.g., frontend/web, backend/api)
Include project or service names

Viewing Image Tags

In the Console

Click on a repository name
View all tags for that repository
See tag details including:
- Tag name
- Digest (SHA256)
- Size
- Push date

Using Docker CLI

List tags for a specific repository:

# View all tags
docker images dcr.nexqloud.io/your-registry-name/repository-name

# Pull specific tag
docker pull dcr.nexqloud.io/your-registry-name/repository-name:tag

Organizing Repositories

Hierarchical Structure

Organize repositories using path-like names:

dcr.nexqloud.io/your-registry-name/
  ├── frontend/web:latest
  ├── frontend/web:v1.0.0
  ├── backend/api:latest
  ├── backend/api:v1.0.0
  ├── backend/worker:latest
  └── services/auth:latest

Example push commands:

docker push dcr.nexqloud.io/your-registry-name/frontend/web:latest
docker push dcr.nexqloud.io/your-registry-name/backend/api:v1.0.0
docker push dcr.nexqloud.io/your-registry-name/services/auth:latest

Naming Conventions

Recommended patterns:

# By component
frontend/component-name
backend/service-name
database/db-type

# By environment
myapp/dev
myapp/staging
myapp/production

# By version
myapp:v1.0.0
myapp:v1.1.0
myapp:latest

# Combined approach
project/component:environment-version
example: ecommerce/api:prod-v2.1.0

Repository Management Operations

Viewing Repository Details

Get detailed information about a repository:

Click on the repository name in the console
View:
- All tags
- Image layers
- Push history
- Size information

Copying Tags

Copy a tag to create a new reference:

# Pull existing tag
docker pull dcr.nexqloud.io/your-registry-name/myapp:v1.0.0

# Tag with new name
docker tag dcr.nexqloud.io/your-registry-name/myapp:v1.0.0 \
  dcr.nexqloud.io/your-registry-name/myapp:stable

# Push new tag
docker push dcr.nexqloud.io/your-registry-name/myapp:stable

Inspecting Images

View image details locally:

# Pull image
docker pull dcr.nexqloud.io/your-registry-name/myapp:latest

# Inspect image
docker inspect dcr.nexqloud.io/your-registry-name/myapp:latest

# View image history
docker history dcr.nexqloud.io/your-registry-name/myapp:latest