diff --git a/pixelfed/Dockerfile b/pixelfed/Dockerfile
index 14463e7..206453c 100644
--- a/pixelfed/Dockerfile
+++ b/pixelfed/Dockerfile
@@ -49,12 +49,14 @@ RUN set -ex; \
         apt-get purge -y --autoremove -o APT::AutoRemove::RecommendsImportant=false; \
         rm -rf /var/lib/apt/lists/*
 
-RUN echo 'memory_limit=512M' > /usr/local/etc/php/conf.d/memory-limit.ini; \
-        sed -i'' 's/post_max_size.*/post_max_size = 42M/g' /usr/local/etc/php/php.ini-production; \
-        sed -i'' 's/file_uploads.*/file_uploads = On/g' /usr/local/etc/php/php.ini-production; \
-        sed -i'' 's/upload_max_filesize.*/upload_max_filesize = 40M/g' /usr/local/etc/php/php.ini-production; \
-        sed -i'' 's/max_file_uploads.*/max_file_uploads = 20/g' /usr/local/etc/php/php.ini-production; \
-        sed -i'' 's/max_execution_time.*/max_execution_time = 1200/g' /usr/local/etc/php/php.ini-production; \
+RUN {\
+     echo memory_limit = 512M ;\
+     echo post_max_size = 42M ;\
+     echo file_uploads = On ;\
+     echo max_file_uploads = 20 ;\
+     echo max_execution_time = 1200 ;\
+     echo upload_max_filesize = 40M ;\
+    } > /usr/local/etc/php/conf.d/pixelfed.ini; \
         chown -R www-data:root /var/www; \
         chmod -R g=u /var/www