including node and npm install in dockerfile

Author: kimberlythegeek

Dockerfile

@@ -1,3 +1,8 @@
+FROM node:alpine
+ADD ./axe_selenium_python/package*.json ./src/axe_selenium_python/
+WORKDIR /src/axe_selenium_python
+RUN npm install
+
 FROM ubuntu:xenial
 
 ENV DEBIAN_FRONTEND=noninteractive \
@@ -34,9 +39,4 @@ ENV TOX_VERSION=3.2.0
 RUN pip3 install tox==$TOX_VERSION
 
 ADD . /src
-
-FROM node:alpine
-WORKDIR /src/axe_selenium_python
-RUN npm install
-
 WORKDIR /src