Docker Container Lifecycle and Signals

Every container moves through a defined lifecycle: created, running, paused, stopped, removed. Understanding SIGTERM vs SIGKILL, restart policies (on-failure, unless-stopped, always), and the cgroups freezer behind docker pause is essential for graceful shutdowns and resilient services in production.

More DevOps topics

Distributed Tracing
Docker — Production Errors, Mistakes and Recovery
Docker BuildKit and Modern Container Builds
Docker Buildx
Docker CLI
Docker Compose
Docker Daemon
Docker Debugging and Observability
Docker Image Internals and OCI Spec
Docker Multi-Stage Builds
Docker Networking
Docker Overview

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