Prefer long command line options

Co-authored-by: Nick <[email protected]>

Dockerfile

@@ -63,7 +63,7 @@ RUN pip3 install --no-cache-dir \
 ###
 COPY src/rebuild-symlinks.py src/entrypoint.sh src/version.txt /opt/certbot/
 COPY src/config /root/.aws/config
-RUN ln -snf /run/secrets/credentials /root/.aws/credentials
+RUN ln --symbolic --no-dereference --force /run/secrets/credentials /root/.aws/credentials
 
 ###
 # Prepare to run