diff --git a/.dockerignore b/.dockerignore
index ef71311..a141fb0 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -3,4 +3,6 @@
 *.swp
 Makefile
 Readme.md
+slides/
+node_modules/
 *.go
diff --git a/Dockerfile b/Dockerfile
index adfcf19..7a5aa0b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.7
+FROM alpine:3.8
 
 WORKDIR /app