Readded support for a single-container docker deployment as this is n…

…eeded for the heroku example app

.dockerignore

@@ -3,3 +3,4 @@ deploy/
 build/
 db/
 **/*.test.js
+.heroku/

.travis.yml

@@ -30,7 +30,7 @@ matrix:
         - echo "$DOCKER_PASS" | docker login -u "$DOCKER_USER" --password-stdin
         - echo "$HEROKU_API_KEY" | docker login -u "$HEROKU_USER" --password-stdin registry.heroku.com
       script:
-        - docker build -t $REPO:$COMMIT .
+        - docker build -f heroku/Dockerfile -t $REPO:$COMMIT .
         - docker tag $REPO:$COMMIT $REPO:latest
         - docker tag $REPO:$COMMIT $REPO:$TRAVIS_TAG
         - docker tag $REPO:$COMMIT $REPO:$TRAVIS_TAG

heroku/Dockerfile

@@ -0,0 +1,21 @@
+FROM ubuntu:latest
+WORKDIR /usr/src/app
+ENV PORT 80
+
+RUN apt-get update && apt-get install -y curl
+RUN curl -sL https://deb.nodesource.com/setup_16.x | bash
+RUN apt-get update && apt-get install -y nginx supervisor nodejs
+RUN rm -rf /var/lib/apt/lists/*
+
+COPY package*.json ./
+RUN npm install
+COPY . .
+COPY heroku/conf/supervisord.conf /etc/supervisor/conf.d/supervisord.conf
+COPY heroku/conf/nginx.conf /etc/nginx/sites-available/default
+
+RUN npm run build
+RUN cp -a build/. /var/www/html/
+
+# add support for $PORT env variable
+CMD sed -i -e 's/$PORT/'"$PORT"'/g' /etc/nginx/sites-available/default && /usr/bin/supervisord
+

heroku/conf/nginx.conf

@@ -0,0 +1,20 @@
+server {
+	listen $PORT;
+	root /var/www/html;
+	index index.html;
+	server_name _;
+	location / {
+        try_files $uri /index.html;
+	}
+	location /api/ {
+        proxy_pass http://localhost:8001/;
+	}
+	location /socket.io/ {
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_http_version 1.1;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header Host $host;
+        proxy_pass http://localhost:8000/socket.io/;
+	}
+}

heroku/conf/supervisord.conf

@@ -0,0 +1,20 @@
+[supervisord]
+nodaemon=true
+
+[program:app]
+directory=/usr/src/app
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0
+command=npm run server
+
+[program:nginx]
+command=/usr/sbin/nginx -g "daemon off;"
+priority=900
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0
+username=www-data
+autorestart=true