diff --git a/backend/Dockerfile b/backend/Dockerfile
index 8e0b2f4..1b297eb 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,8 +1,8 @@
 FROM alpine:3.11
 
 RUN \ 
-apk add --update npm python ffmpeg && \
-apk add --repository http://dl-3.alpinelinux.org/alpine/edge/testing/ \
+apk add --no-cache npm python ffmpeg && \
+apk add --no-cache --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing/ \
     atomicparsley
 
 # Change directory so that our commands run inside this new directory
@@ -21,4 +21,4 @@ RUN npm install
 EXPOSE 17442
 
 # Run the specified command within the container.
-CMD [ "node", "app.js" ]
\ No newline at end of file
+CMD [ "node", "app.js" ]