Fix dockerfile

Dockerfile.dev

@@ -5,7 +5,9 @@ RUN apk update && apk add build-base autoconf automake libtool pkgconfig nasm
 # Add the package.json file and build the node_modules folder
 WORKDIR /app
 COPY ./package*.json ./
-RUN mkdir node_modules && yarn install
+RUN mkdir node_modules
+RUN apk update && apk add yarn python g++ make && rm -rf /var/cache/apk/*
+RUN yarn install
 
 # Get a clean image with gatsby-cli and the pre-built node modules
 FROM node:12-alpine