Adding NodeJS version 12 env (#1683)

Co-authored-by: Rahul Bhati <rjbhati009@gmail.com>

environments/nodejs/Dockerfile-12.16

@@ -0,0 +1,15 @@
+FROM node:12.16-alpine3.11
+
+ARG NODE_ENV
+ENV NODE_ENV $NODE_ENV
+
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app
+
+COPY package.json /usr/src/app/
+RUN npm install && npm cache clean --force
+COPY server.js /usr/src/app/server.js
+
+CMD [ "npm", "start" ]
+
+EXPOSE 8888

environments/nodejs/builder/Dockerfile-12.16

@@ -0,0 +1,11 @@
+ARG BUILDER_IMAGE=fission/builder
+FROM ${BUILDER_IMAGE}
+# default variant is the official alpine node image (much smaller than the standard image)
+FROM node:12.16-alpine3.11
+
+ARG NODE_ENV
+ENV NODE_ENV $NODE_ENV
+
+COPY --from=0 /builder /builder
+ADD build.sh /usr/local/bin/build
+RUN chmod +x /usr/local/bin/build