Adding workflow for docker publishing

Author: treyrich

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:lts-alpine as build
+FROM node:18-alpine as build
 RUN apk add --no-cache make gcc g++ python3 linux-headers udev tzdata
 WORKDIR /app
 COPY package*.json ./
@@ -7,11 +7,12 @@ COPY . .
 RUN npm run build
 RUN npm ci --production
 
-FROM node:lts-alpine
+FROM node:18-alpine
 RUN apk add git
 RUN mkdir /app && chown node:node /app && mkdir /app/data && chown node:node /app/data
 WORKDIR /app
 COPY --chown=node:node --from=build /app .
 USER node
 ENV NODE_ENV=production
+EXPOSE 4200
 ENTRYPOINT ["node", "dist/app.js"]