Remove root user from docker, update ports and update Node / libraries

Dockerfile

@@ -1,26 +1,34 @@
-FROM node:8-alpine
+# Base
+FROM node:10-alpine as base
 MAINTAINER "Dan Farrelly <daniel.j.farrelly@gmail.com>"
 
 ENV NODE_ENV production
 
-RUN apk add --no-cache curl
+# Build
+FROM base as build
 
-RUN mkdir -p /usr/src/app
-WORKDIR /usr/src/app
+WORKDIR /root
+COPY package*.json ./
 
-ADD package*.json /usr/src/app/
+RUN apk add --no-cache curl \
+  && npm install \
+  && npm prune \
+  && npm cache clean --force \
+  && rm package*.json
 
-RUN npm install && \
-    npm prune && \
-    npm cache clean --force && \
-    rm -rf /tmp/*
+# Prod
+FROM base as prod
 
-ADD . /usr/src/app/
+USER node
+WORKDIR /home/node
 
-EXPOSE 80 25
+COPY --chown=node:node . /home/node
+COPY --chown=node:node --from=build /root/node_modules /home/node/node_modules
 
-ENTRYPOINT ["bin/maildev"]
-CMD ["--web", "80", "--smtp", "25"]
+EXPOSE 1080 1025
+
+ENTRYPOINT ["/home/node/bin/maildev"]
+CMD ["--web", "1080", "--smtp", "1025"]
 
 HEALTHCHECK --interval=10s --timeout=1s \
-  CMD curl -k -f -v http://localhost/healthz || exit 1
+  CMD curl -k -f -v http://localhost:1080/healthz || exit 1

README.md

@@ -19,7 +19,7 @@ If you want to use MailDev with [Docker](https://www.docker.com/), you can use t
 For a guide for usage with Docker,
 [checkout the docs](https://github.com/maildev/maildev/blob/master/docs/docker.md).
 
-    $ docker run -p 1080:80 -p 1025:25 maildev/maildev
+    $ docker run -p 1080:1080 -p 1025:1025 maildev/maildev
 
 For convenient use with Grunt, try [grunt-maildev](https://github.com/xavierpriour/grunt-maildev).
 

docs/docker.md

@@ -13,7 +13,7 @@ If you don't have the image on your machine, Docker will pull it. Let's name
 it "maildev" and publish the interface on port `1080`:
 
 ```
-$ docker run -p 1080:80 --name maildev maildev/maildev
+$ docker run -p 1080:1080 --name maildev maildev/maildev
 ```
 
 Now the MailDev UI will be running at port `1080` on your virtual machine
@@ -39,7 +39,7 @@ The Dockerfile specifically EXPOSES port 80 and 25, therefor you need to tell ma
 This example adds the base-pathname parameter.
 
 ```
-$ docker run -p 1080:80 -p 1025:25 maildev/maildev bin/maildev --base-pathname /maildev -w 80 -s 25
+$ docker run -p 1080:1080 -p 1025:1025 maildev/maildev bin/maildev --base-pathname /maildev -w 1080 -s 1025
 ```