fix password_min_time error for pam auth (#3)

docker/Dockerfile

@@ -26,6 +26,8 @@ RUN mkdir -p /tmp/davrods/build
 
 # Update iRODS version in CMakeLists file
 RUN sed -i 's/${DAVRODS_IRODS_VERSION}/${IRODS_PKG_VERSION}/g' /tmp/davrods/CMakeLists.txt
+# Update TTL to get around password_min_time error
+RUN sed -i 's/rods_auth_ttl = 1/rods_auth_ttl = 336/g' /tmp/davrods/src/config.c
 # Workaround proposed by iRODS team in https://github.com/UtrechtUniversity/davrods/issues/35
 RUN sed -i 's/module AP_MODULE_DECLARE_DATA davrods_module;/extern module AP_MODULE_DECLARE_DATA davrods_module;/g' /tmp/davrods/src/mod_davrods.h
 # Build Davrods for iRODS version