chore: fix Dockerfile setup

- move Dockerfile to root dir
- set correct default port for node server
- include node_modules folder in final docker build

.dockerignore

 Dockerfile
-node_modules
 .git

app/Dockerfile → Dockerfile

@@ -4,13 +4,13 @@ FROM node:12.16.3 as clientbuild
 RUN mkdir /usr/src/app
 WORKDIR /usr/src/app
 
-COPY package*.json ./
+COPY ./app/client/package*.json ./
 
 ENV PATH /usr/src/app/node_modules/.bin:$PATH
 ENV API_URL todo-application-service:3002
 
 RUN npm install --silent
-COPY . .
+COPY ./app/client .
 
 RUN API_URL=$API_URL node scripts/build.js
 # Client build finished
@@ -19,9 +19,9 @@ RUN API_URL=$API_URL node scripts/build.js
 FROM node:12.16.3
 
 WORKDIR "/usr/app"
-COPY package*.json ./
+COPY package*.json .
 RUN npm install --production
-COPY . .
+COPY ./app/server .
 # Copy client app into public folder
 COPY --from=clientbuild /usr/src/app/build ./public
 

app/server/src/index.js

@@ -12,7 +12,7 @@ const healthRoute = require('./routes/health.js');
 let cookieParser = require('cookie-parser');
 
 const app = express();
-const port = process.env.PORT || 5000;
+const port = process.env.PORT || 3002;
 
 const corsOptions = {
     origin: `http://localhost:${ port }`,