docs: local and prod execution

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@@ -12,5 +12,70 @@ more details.
 
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 this program. If not, see <https://www.gnu.org/licenses/>.
-* TODO Running dev
-* TODO Prod deployment
+* Running dev
+need 3 teminals
+** start backend
+in sbt
+#+begin_src sbt
+backend/run
+#+end_src
+** continuous ScalaJS compilation
+in sbt
+#+begin_src sbt
+project frontend
+~fastLinkJS
+#+end_src
+** start Vite
+#+begin_src bash
+npm run dev
+#+end_src
+
+- starting to serve frontend at localhost:5173
+- started forwarding /api requests to localhost:8080 - backend
+* Prod deployment (alpha version)
+** Nix managed server:
+*** build and copy backend
+#+begin_src bash
+sbt backend/assembly
+scp -r backend/target/scala-3.2.0/backend-assembly-0.1.1.jar  <your-server>:~/Downloads/backend-assembly-0.1.1.jar
+#+end_src
+
+*** build and copy frontend
+#+begin_src bash
+npm run build
+scp -r dist/*  <your-server>:/var/www/planning-poker-grargh
+#+end_src
+*** start backend
+#+begin_src bash
+nix shell --extra-experimental-features nix-command --extra-experimental-features flakes nixpkgs#jdk
+java -jar ~/Downloads/backend-assembly-0.1.1.jar &
+#+end_src
+**** to kill / restart
+#+begin_src bash
+ps aux | grep backend-assembly
+kill <id of found backend java process>
+#+end_src
+**** TODO make nix home-manager module with systemd service
+*** configure nginx
+#+begin_src nix
+services.nginx.virtualHosts."planning-poker.sunshine.industries" = {
+    root = "/var/www/planning-poker-grargh"; # copied manually
+};
+
+services.nginx.virtualHosts."planning-poker.sunshine.industries".locations."/api" = {
+  proxyPass = "http://127.0.0.1:8080"; # started manually
+  proxyRedirect = "off";
+  extraConfig = ''
+    rewrite ^/api/(.*)$ /$1 break;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header X-Forwarded-Proto $scheme;
+
+    # Add the following lines for WebSocket support
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+  '';
+};
+#+end_src