potiuk commented on a change in pull request #9032:
URL: https://github.com/apache/airflow/pull/9032#discussion_r430981688
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File path: Dockerfile
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@@ -166,7 +167,8 @@ ARG AIRFLOW_VERSION
ENV AIRFLOW_VERSION=${AIRFLOW_VERSION}
ARG AIRFLOW_EXTRAS
-ENV AIRFLOW_EXTRAS=${AIRFLOW_EXTRAS}
+ARG ADDITIONAL_AIRFLOW_EXTRAS
+ENV
AIRFLOW_EXTRAS=${AIRFLOW_EXTRAS}${ADDITIONAL_AIRFLOW_EXTRAS:+,}${ADDITIONAL_AIRFLOW_EXTRAS}
Review comment:
Why this + here?
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