Answer
Env vars appear in inspect, process lists, and layer history; use secret managers.
Quick Answer
Environment variables are single-line strings. Multi-line secrets (certificates, private keys) break parsing and are easily exposed in logs, docker inspect output, or /proc/self/environ inside the container. Use Docker Secrets or volume-mount a secrets file for anything multi-line or sensitive.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ