EXTENSIONS_DOWNLOAD overwrite extension

[Lelanto]

With the EXTENSIONS_DOWNLOAD variable configured, when a restart is performed, the service does not start because it tries to download and overwrite the extensions. Recommendation: Add the -o option in /entrypoint.sh line 230.
from
for f in /tmp/userextensions/*.zip; do unzip "$f" -d /opt/connect/extensions; done
to
for f in /tmp/userextensions/*.zip; do unzip "$f" -d -o /opt/connect/extensions; done