Q: How do you view the Docker build history/layers of an image?
docker history <image> — shows each layer, its size, and the command that created it. Use --no-trunc to see full commands. dive <image> f...
#Docker #Docker #L2 #Containers #Linux
🎙️ Candidate Opening & Architectural Context
""Container stability relies on clean signal handling (SIGTERM vs SIGKILL) and immutable image tagging. When addressing this question, I walk the interviewer through our production incident runbook: isolating the blast radius, checking diagnostic logs and metrics, and applying a safe fix.""
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🛠️ Production Runbook & Step-by-Step Resolution
1️⃣
Production Solution & Architecture
docker history — shows each layer, its size, and the command that created it. Use --no-trunc to see full commands. dive for interactive layer explorer.
💡 The Senior SRE Gold Nugget (Key Architectural Takeaway)
"Pro-Tip: docker history — shows each layer, its size, and the command that created it. Use --no-trunc to see full commands. dive for inte."
⚡ 60-Second Elevator Pitch Talking Points
- Immediate Triage: docker history — shows each layer, its size, and the command that created it. Use --no-trunc t
- Run targeted verification commands before modifying configuration.
- Automate permanent guardrails (CI check, alerts, IaC policy) to prevent recurrence.
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