Fix: Environment variables can be duplicated on run #1218
Merged
katiewasnothere merged 6 commits intoapple:mainfrom Feb 21, 2026
Merged
Fix: Environment variables can be duplicated on run #1218katiewasnothere merged 6 commits intoapple:mainfrom
katiewasnothere merged 6 commits intoapple:mainfrom
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JaewonHur
reviewed
Feb 18, 2026
JaewonHur
approved these changes
Feb 19, 2026
katiewasnothere
approved these changes
Feb 19, 2026
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@simone-panico Could you run |
JaewonHur
approved these changes
Feb 20, 2026
katiewasnothere
approved these changes
Feb 21, 2026
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Type of Change
Motivation and Context
As reported in 1212, environment variables defined in a Dockerfile (ENV) were not being overridden when passed via -e at runtime, resulting in duplicate entries in the container's environment.
Root cause:
Parser.allEnv()simply merged image, env-file, and user-provided environment variables without deduplication. Sincegetenv()returns the first match, the image default took precedence over the user override.Fix:
allEnv()now deduplicates by key, with later sources overriding earlier onesTesting