Updated dockerfile to be used to build a distributable docker image

Dockerfile

@@ -1,12 +1,23 @@
-FROM node:10.4.1-alpine
+FROM nginx:1.15.2-alpine
 MAINTAINER Alejandro Celaya <alejandro@alejandrocelaya.com>
 
-# Install yarn
-RUN apk add --no-cache --virtual yarn
+# Install node and yarn
+RUN apk add --no-cache --virtual nodejs && apk add --no-cache --virtual yarn
 
-# Make home dir writable by anyone
-RUN chmod 777 /home
+ADD . ./shlink-web-client
 
-CMD cd /home/shlink/www && \
+# Install dependencies and build project
+RUN cd ./shlink-web-client && \
     yarn install && \
-    yarn start
+    yarn build && \
+
+    # Move build contents to document root
+    cd .. && \
+    rm -r /usr/share/nginx/html/* && \
+    mv ./shlink-web-client/build/* /usr/share/nginx/html && \
+    rm -r ./shlink-web-client && \
+
+    # Delete and uninstall build tools
+    yarn cache clean && apk del yarn && apk del nodejs
+
+WORKDIR /usr/share/nginx/html