Docker

Container Lifecycle and Restart Policies

Reason about container lifecycle transitions and choose a restart policy that matches failure behavior, operator intent, and daemon restarts.

Intermediate14 min read
Docker lessonContainer and orchestration foundationsPractice

UNTIMED COACHING

Practice before the pressure

Use feedback to correct the model, not merely memorize an option position.

GUIDED PRACTICE

Practice the lesson questions

Answer normal lesson questions without a timer. Every answer includes an explanation, and incorrect answers can be tried again before continuing.

CONCEPT MODELS

See the lesson as a system

Use these visual guides to connect the key ideas before answering the questions.

Connect the roles in Container Lifecycle and Restart PoliciesKeep created state, main process, exit evidence, and restart policy as separate workload roles.
Connect the roles in Container Lifecycle and Restart PoliciesA topic-specific model connects four distinct roles used to reason about container lifecycle and restart policies.
State recordRecord exists before process start
Container processProcess determines the running lifetime
Exit observationEvidence includes code and finish time
Restart decisionDecision controls automatic restart conditions
Verify Maintenance stopConnect maintenance stop with its topic-specific inspection, expected outcome, and protected workload boundary.
Verify Maintenance stopA verification model for container lifecycle and restart policies connects the final workload decision to its check, result, and protected boundary.
Operator boundaryBoundary preserves an intentional stop
Starting checkInspect operator boundary
Expected resultConfirm operator boundary
Safety boundaryProtect state record scope