container-registries

1# Container Registries
2 
3Store, manage, and distribute container images across cloud and self-hosted registries.
4 
5## When to Use This Skill
6 
7Use this skill when:
8- Pushing and pulling container images
9- Configuring registry authentication
10- Setting up image retention policies
11- Managing private container registries
12- Implementing image scanning and security
13 
14## Prerequisites
15 
16- Docker or Podman installed
17- Cloud CLI tools (AWS CLI, az, gcloud) for respective registries
18- Appropriate IAM permissions
19 
20## Docker Hub
21 
22### Authentication
23 
24```bash
25# Login
26docker login
27 
28# Login with token
29echo "$DOCKER_TOKEN" | docker login -u username --password-stdin
30```
31 
32### Push/Pull Images
33 
34```bash
35# Tag image
36docker tag myapp:latest username/myapp:latest
37 
38# Push
39docker push username/myapp:latest
40 
41# Pull
42docker pull username/myapp:latest
43```
44 
45### Automated Builds
46 
47Configure in Docker Hub UI:
481. Connect GitHub/Bitbucket repository
492. Set build rules (branch → tag mapping)
503. Configure build context and Dockerfile path
51 
52## Amazon ECR
53 
54### Setup
55 
56```bash
57# Create repository
58aws ecr create-repository \
59  --repository-name myapp \
60  --image-scanning-configuration scanOnPush=true \
61  --encryption-configuration encryptionType=AES256
62 
63# Get registry URI
64REGISTRY=$(aws ecr describe-repositories \
65  --repository-names myapp \
66  --query 'repositories[0].repositoryUri' \
67  --output text | cut -d'/' -f1)
68```
69 
70### Authentication
71 
72```bash
73# Login (Docker)
74aws ecr get-login-password --region us-east-1 | \
75…