Docker Advanced Topics
Master advanced Docker configurations including networking, security, and orchestration on Ubuntu
Advanced Docker Usage
1
Docker Networking
Use docker network create to create custom bridge networks. For secure services, setup MacVLAN or IPvLAN with:
docker network create --driver macvlan --subnet=192.168.1.0/24 my-macvlan
2
Security Best Practices
- Use
docker run --security-optfor seccomp/AppArmor profiles - Implement
docker buildxfor secure multi-stage builds - Use
docker scoutfor image vulnerability scans
3
Swarm Orchestration
Initialize a swarm cluster:
docker swarm initDeploy a stack with:
docker stack deploy -c docker-compose.yml my-stack
4
Kubernetes Integration
Use microk8s for local Kubernetes development:
sudo snap install microk8s
microk8s enableDeploy to Ubuntu Kubernetes with:
kubectl apply -f deployment.yamlTroubleshooting
Service discovery failing?
Verify your DNS settings with docker network inspect my-network and check for:
- Correct DNS configuration
- Network driver compatibility
- Sufficient memory/CPU resources
Build failing with cache?
Clear the cache using:
docker builder pruneOr use --no-cache for a fresh build
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