Optimized dockerfile for next iterators (better layer caching -- quicker image rebuilds)

Author: kobudnik

dockerfile

@@ -3,19 +3,18 @@ FROM node
 # Set the working directory to /app
 WORKDIR /app
 
-COPY package*.json ./
-
-# Run npm install to install app dependencies
-RUN npm install
-
-# Set the PATH env variable
-# ENV PATH="/usr/local/bin:${PATH}"
-# COPY /usr/local/bin/docker /usr/local/bin/docker
 ENV DOCKERVERSION=19.03.12
+
 RUN curl -fsSLO https://download.docker.com/linux/static/stable/x86_64/docker-${DOCKERVERSION}.tgz \
   && tar xzvf docker-${DOCKERVERSION}.tgz --strip 1 -C /usr/local/bin docker/docker \
   && rm docker-${DOCKERVERSION}.tgz
 
+
+COPY package*.json ./
+
+# Run npm install to install app dependencies
+RUN npm install
+
 # Copy the current directory contents into the container at /app
 COPY . .
 
@@ -26,3 +25,4 @@ EXPOSE 4000
 CMD ["npm", "start"]
 
 
+