Docker Skills Tests

Docker — Beginner

Images, containers, basic Dockerfile instructions, and everyday CLI. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.

Node.js + PostgreSQL + Docker — Intermediate

Compose networking, migrations, connection pools, secrets, volumes, and everyday incidents when a Node service talks to Postgres in containers.

Python + PostgreSQL + Docker — Intermediate

Compose networking, Alembic/Django migrations, SQLAlchemy pools, secrets, volumes, and everyday incidents when a Python service talks to Postgres in containers.

Docker — Intermediate

Multi-stage builds, caching, networking, Compose features, and image hygiene. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.

Kubernetes + Docker + CI/CD — Advanced

Advanced delivery scenarios linking reproducible Docker builds, trusted registries, Kubernetes rollouts, progressive delivery, health gates, provenance, and rollback.

NestJS + PostgreSQL + Docker — Advanced

Production scenarios covering configuration, health checks, connection management, migrations, container security, observability, resource limits, and database transport security.

Docker — Advanced

Security sandboxes, supply chain, rootless, and engine internals at a high level. Mix of single-answer and multiple-answer items; multi-select questions ask you to select every correct statement.

Cybersecurity + Node.js + Docker — Advanced

Advanced hardening of containerized Node.js services: least privilege, secure images, supply-chain controls, runtime isolation, network threats, and vulnerability response.