Adding docker

Dockerfile

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+FROM nginx:1.17
+
+WORKDIR ./
+# Stage 1, based on Nginx, to have only the compiled app, ready for production with Nginx
+COPY nginx.conf /etc/nginx/nginx.conf
+COPY nginx.vh.default.conf /etc/nginx/conf.d/default.tmpl
+COPY  ./dist/hyperiot /usr/share/nginx/html
+
+CMD /bin/sh -c "export DOLLAR=$ && envsubst < /etc/nginx/conf.d/default.tmpl > /etc/nginx/conf.d/default.conf && cat /etc/nginx/conf.d/default.conf && nginx -g 'daemon off;' "

nginx.conf

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+worker_processes  2;
+
+pid /var/run/nginx.pid;
+#                          [ debug | info | notice | warn | error | crit ]
+error_log  /var/log/nginx.error_log  info;
+
+events {
+    worker_connections   2000;
+    use epoll;
+}
+
+http { 
+    include /etc/nginx/mime.types;
+
+
+    ##
+    # LOG
+    ##
+
+    # Log format. Other NGINX variables ($variable) can be used as you wish.
+    log_format main '$remote_addr - $remote_user [$time_local] '
+                    '"$request" $status  $body_bytes_sent "$http_referer" '
+                    '"$http_user_agent" "$http_x_forwarded_for"';
+    # Access log: path and type.
+    access_log  dnginx_access.log  main;
+    # Error log: path and type.
+    error_log  /var/log/nginx_error.log debug;
+
+    ##
+    # TCP
+    ##
+
+    # Optimizes data transfer copying data between one file descriptor and another
+    # instead of reading and copying data to/from user space.
+    sendfile on;
+    # Causes NGINX to attempt to send its HTTP response head in one packet,
+    # instead of using partial frames. This is useful for prepending headers before calling sendfile,
+    # or for throughput optimization.
+    tcp_nopush on;
+    # Disables the Nagle algorithm.
+    # It's useful for sending frequent small bursts of data in real time.
+    tcp_nodelay  off;
+    # Timeout during which a keep-alive client connection will stay open to serve 
+    # all the requested files from the server side.
+    keepalive_timeout  30s;
+    # If a client does not receive anything within the time set in this directive, a connection is closed. 
+    send_timeout 60s;
+
+    ##
+    # GZIP
+    ##
+
+    # In production you MUST set gzip to "on" in order to save bandwidth. Web browsers
+    # which handle compressed files (all recent ones do) will get a very smaller version
+    # of the server response. 
+    gzip  on;
+    # Enables compression for a given HTTP request version.
+    gzip_http_version 1.0;
+    # Compression level 1 (fastest) to 9 (slowest).
+    gzip_comp_level 6;
+    # Enables compression for all proxied requests.
+    gzip_proxied any;
+    # Minimum length of the response (bytes). Responses shorter than this length will not be compressed.
+    gzip_min_length 10000;
+    # Enables compression for additional MIME-types.
+    gzip_types  text/plain text/css application/x-javascript text/xml
+                application/xml application/xml+rss text/javascript;
+    # Disables gzip compression for User-Agents matching the given regular expression.
+    # Is this case we've disabled gzip for old versions of the IE that don't support compressed responses.
+    gzip_disable "MSIE [1-6] \.";
+
+    # Load modular configuration files from the /etc/nginx/conf.d directory.
+    include /etc/nginx/conf.d/*.conf;
+}

nginx.vh.default.conf

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+server {
+        listen        80;
+        listen        [::]:80;
+
+        #WebSocket reverse proxy configuration
+        location /hyperiot/ws {
+            resolver 127.0.0.1 [::1];
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade ${DOLLAR}http_upgrade;
+            proxy_set_header Connection "upgrade";
+            proxy_pass "${API_URL}";
+        }
+
+        #HyperIoT API Configuration
+        location /hyperiot {
+            resolver 127.0.0.1 [::1];
+            proxy_http_version 1.1;
+            proxy_pass "${API_URL}";
+        }
+
+        #Angular APP Configuration
+        location / {
+            root /usr/share/nginx/html;
+            index index.html index.htm;
+            try_files ${DOLLAR}uri ${DOLLAR}uri/ /index.html =404;
+        }
+    }
+