fix: docker build failure

.dockerignore

@@ -0,0 +1,12 @@
+node_modules
+npm-debug.log
+Dockerfile*
+docker-compose*
+.dockerignore
+.git
+.gitignore
+README.md
+LICENSE
+.vscode
+dist
+.github

Dockerfile

@@ -8,12 +8,14 @@ COPY package.json /usr/src/app/package.json
 
 RUN npm install -g @angular/cli@9.1.12
 
-CMD ng build
 
 RUN npm install
 
+
 COPY . .
 
+RUN ng build --prod
+
 FROM nginx:1.19.3
 
 COPY --from=builder /usr/src/app/dist/web-app /usr/share/nginx/html