🐛 Fix entrypoint when AUTH_REGISTRIES is empty

entrypoint.sh

@@ -34,18 +34,20 @@ export ALLDOMAINS=${ALLDOMAINS:1} # remove the first comma and export
 # Now handle the auth part.
 echo -n "" > /etc/nginx/docker.auth.map
 
-# Ref: https://stackoverflow.com/a/47633817/219530
-AUTH_REGISTRIES_DELIMITER=${AUTH_REGISTRIES_DELIMITER:-" "}
-s=$AUTH_REGISTRIES$AUTH_REGISTRIES_DELIMITER
-auth_array=();
-while [[ $s ]]; do
+# Only configure auth registries if the env var contains values
+if [ "$AUTH_REGISTRIES" ]; then
+    # Ref: https://stackoverflow.com/a/47633817/219530
+    AUTH_REGISTRIES_DELIMITER=${AUTH_REGISTRIES_DELIMITER:-" "}
+    s=$AUTH_REGISTRIES$AUTH_REGISTRIES_DELIMITER
+    auth_array=();
+    while [[ $s ]]; do
         auth_array+=( "${s%%"$AUTH_REGISTRIES_DELIMITER"*}" );
         s=${s#*"$AUTH_REGISTRIES_DELIMITER"};
-done
+    done
 
-AUTH_REGISTRY_DELIMITER=${AUTH_REGISTRY_DELIMITER:-":"}
+    AUTH_REGISTRY_DELIMITER=${AUTH_REGISTRY_DELIMITER:-":"}
 
-for ONEREGISTRY in "${auth_array[@]}"; do
+    for ONEREGISTRY in "${auth_array[@]}"; do
         s=$ONEREGISTRY$AUTH_REGISTRY_DELIMITER
         registry_array=();
         while [[ $s ]]; do
@@ -59,7 +61,8 @@ for ONEREGISTRY in "${auth_array[@]}"; do
         AUTH_BASE64=$(echo -n "${AUTH_USER}:${AUTH_PASS}" | base64 | tr -d \\n )
         echo "Adding Auth for registry '${AUTH_HOST}' with user '${AUTH_USER}'."
         echo "\"${AUTH_HOST}\" \"${AUTH_BASE64}\";" >> /etc/nginx/docker.auth.map
-done
+    done
+fi
 
 echo "" > /etc/nginx/docker.verify.ssl.conf
 if [[ "a${VERIFY_SSL}" == "atrue" ]]; then