add changes from v0.3

Dockerfile

@@ -1,23 +1,30 @@
 FROM node:8-alpine
 
-RUN apk add yarn git bash s6
+# install build stuff ( make python2 g++ ) for bcrypt since 
+# alpine linux doesn't have pre-built bcrypt
+RUN apk add git bash s6 make python2 g++
 RUN mkdir -p /opt/mykb
 
 # install node_modules to tmp so it can be cached
 RUN mkdir -p /tmp/mykb
 COPY package.json /tmp/mykb
-RUN cd /tmp/mykb && yarn
+RUN cd /tmp/mykb && npm install
 RUN mv /tmp/mykb/node_modules /opt/mykb/
 
 COPY . /opt/mykb
-RUN cd /opt/mykb && yarn build
+RUN cd /opt/mykb && npm run build
+RUN cd /opt/mykb && npm prune --production
+RUN npm cache clean --force
+
+# remove packages from building bcrypt
+RUN apk del make python2 g++
 
 COPY docker_startup.sh /mykb
 RUN chmod +x /mykb
 
-VOLUME /kb /db /config
+VOLUME /kb /config
 
-EXPOSE 3030
+EXPOSE 3000
 
 ARG GIT_NAME=mykb
 ARG GIT_EMAIL=mykb@localhost