diff --git a/.hadolint.yaml b/.hadolint.yaml
new file mode 100644
index 0000000..81540f9
--- /dev/null
+++ b/.hadolint.yaml
@@ -0,0 +1,2 @@
+ignored:
+  - DL3008 # no need to pin versions
diff --git a/Dockerfile b/Dockerfile
index 7000346..53c8cf5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,10 +1,11 @@
 # https://hub.docker.com/_/monica
 FROM monica:4
 
-# Use the default production configuration
-RUN mv "$PHP_INI_DIR/php.ini-production" "$PHP_INI_DIR/php.ini"
-# increase php upload limit
-RUN sed -i 's/upload_max_filesize = 2M/upload_max_filesize = 50M/' "$PHP_INI_DIR/php.ini"
+RUN \
+  # Use the default production configuration
+  mv "$PHP_INI_DIR/php.ini-production" "$PHP_INI_DIR/php.ini" && \
+  # increase php upload limit
+  sed -i 's/upload_max_filesize = 2M/upload_max_filesize = 50M/' "$PHP_INI_DIR/php.ini"
 
 # supervisord dependencies
 RUN apt-get update && \