diff --git a/.env.example b/.env.example
index cddd17c..b571df9 100644
--- a/.env.example
+++ b/.env.example
@@ -1,2 +1,9 @@
 DB_PASSWORD=
-DB_PASSWORD_V2=
\ No newline at end of file
+BACKEND_URL=
+MAIL_HOST=
+MAIL_PORT=
+MAIL_USER=
+MAIL_PASSWORD=
+MAIL_SENDEES_CONTACT=
+MAIL_SENDEES=
+NAAS_URL=
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
index 72ec119..0bcb26b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,8 @@ dist/
 build/
 out/
 
+docker-compose.override.yml
+
 # Environment variables
 .env
 .env.local
diff --git a/Docs/docker/README.md b/Docs/docker/README.md
new file mode 100644
index 0000000..2837171
--- /dev/null
+++ b/Docs/docker/README.md
@@ -0,0 +1,78 @@
+# Docker
+
+## Prerequisites
+
+You have created an empty `docker-compose.override.yml` file in the root directory of this repository.
+
+## Docker Network
+
+If you want to run the stack in a docker network, you need to change the `BACKEND_HOST` variable in the root `.env` file
+to `stockhome-backend`. To add a docker network, create a `docker-compose.override.yml` file in the root directory of
+this repository with the following content:
+
+```yaml
+services:
+  admin-frontend:
+    networks:
+      - proxynet
+
+  backend:
+    networks:
+      - proxynet
+
+  usr-frontend:
+    networks:
+      - proxynet
+
+  no-as-a-service:
+    networks:
+      - proxynet
+
+  mysql:
+    networks:
+      - proxynet
+
+networks:
+  proxynet:
+    external: true
+```
+
+To start off I recommend to set the `BACKEND_HOST` variable to `localhost` and start the stack without a docker network.
+After you have started the stack and everything is working, you can add a docker network.
+
+## Ports
+
+### Change Exposed Ports
+
+If you want to change the exposed ports, you can do this in the `docker-compose.yml` file like so:
+
+```yaml
+services:
+  mysql:
+    ports:
+      - "3306:3306"
+
+  backend:
+    ports:
+      - "8004:8004"
+
+  usr-frontend:
+    ports:
+      - "80:80"
+```
+
+### Remove Exposed Ports
+
+If you want to remove the exposed ports, you can do this in the `docker-compose.override.yml` file like so:
+
+```yaml
+services:
+  mysql:
+    ports: !override [ ]
+
+  backend:
+    ports: !override [ ]
+
+  usr-frontend:
+    ports: !override [ ]
+```
diff --git a/README.md b/README.md
index de81827..026b686 100644
--- a/README.md
+++ b/README.md
@@ -19,17 +19,21 @@ A small full‑stack system to log in, view available items, reserve them for a
 ## Contents
 
 - Frontend: [frontend/](frontend)
-  - Vite/Tailwind config: [frontend/vite.config.ts](frontend/vite.config.ts), [frontend/tailwind.config.js](frontend/tailwind.config.js)
-  - App entry: [frontend/src/main.tsx](frontend/src/main.tsx), [frontend/src/App.tsx](frontend/src/App.tsx)
-  - UI: [frontend/src/layout/Layout.tsx](frontend/src/layout/Layout.tsx), [frontend/src/components](frontend/src/components)
-  - Data/utilities: [frontend/src/utils/fetchData.ts](frontend/src/utils/fetchData.ts), [frontend/src/utils/userHandler.ts](frontend/src/utils/userHandler.ts), [frontend/src/utils/toastify.ts](frontend/src/utils/toastify.ts)
+    - Vite/Tailwind
+      config: [frontend/vite.config.ts](frontend/vite.config.ts), [frontend/tailwind.config.js](frontend/tailwind.config.js)
+    - App entry: [frontend/src/main.tsx](frontend/src/main.tsx), [frontend/src/App.tsx](frontend/src/App.tsx)
+    -
+    UI: [frontend/src/layout/Layout.tsx](frontend/src/layout/Layout.tsx), [frontend/src/components](frontend/src/components)
+    -
+    Data/utilities: [frontend/src/utils/fetchData.ts](frontend/src/utils/fetchData.ts), [frontend/src/utils/userHandler.ts](frontend/src/utils/userHandler.ts), [frontend/src/utils/toastify.ts](frontend/src/utils/toastify.ts)
 - Backend: [backend/](backend)
-  - Server: [backend/server.js](backend/server.js)
-  - Routes: [backend/routes/api.js](backend/routes/api.js), [backend/routes/apiV2.js](backend/routes/apiV2.js)
-  - DB + services: [backend/services/database.js](backend/services/database.js), [backend/services/tokenService.js](backend/services/tokenService.js)
-  - Schema/seed: [backend/scheme.sql](backend/scheme.sql)
+    - Server: [backend/server.js](backend/server.js)
+    - Routes: [backend/routes/api.js](backend/routes/api.js), [backend/routes/apiV2.js](backend/routes/apiV2.js)
+    - DB +
+      services: [backend/services/database.js](backend/services/database.js), [backend/services/tokenService.js](backend/services/tokenService.js)
+    - Schema/seed: [backend/scheme.sql](backend/scheme.sql)
 - Docs: [docs/](docs)
-  - API docs (see below): [docs/backend_API_docs/README.md](docs/backend_API_docs/README.md)
+    - API docs (see below): [docs/backend_API_docs/README.md](docs/backend_API_docs/README.md)
 
 ## Features (high‑level)
 
@@ -41,7 +45,8 @@ A small full‑stack system to log in, view available items, reserve them for a
 Key frontend utilities:
 
 - [`utils.fetchData.fetchAllData`](frontend/src/utils/fetchData.ts): loads items, loans, and user loans after login.
-- [`utils.fetchData.getBorrowableItems`](frontend/src/utils/fetchData.ts): fetches borrowable items for the selected time range.
+- [`utils.fetchData.getBorrowableItems`](frontend/src/utils/fetchData.ts): fetches borrowable items for the selected
+  time range.
 - [`utils.userHandler.createLoan`](frontend/src/utils/userHandler.ts): creates a new loan for selected items.
 - [`utils.userHandler.handleDeleteLoan`](frontend/src/utils/userHandler.ts): deletes a loan and syncs local state.
 - [`utils.toastify.myToast`](frontend/src/utils/toastify.ts): toast notifications.
@@ -54,20 +59,18 @@ UI flow (main screens):
 
 ## Development
 
-- Scripts: see [frontend/package.json](frontend/package.json) and [backend/package.json](backend/package.json)
-  - Frontend: `npm run dev`, `npm run build`, `npm run preview`, `npm run lint`
-  - Backend: `npm start`
-- Linting: ESLint configured via [frontend/eslint.config.js](frontend/eslint.config.js)
-- TypeScript configs: [frontend/tsconfig.app.json](frontend/tsconfig.app.json), [frontend/tsconfig.node.json](frontend/tsconfig.node.json)
+- The NAAS (no-as-a-service) and the mysql database are running in a docker container
+- `frontend`, `backend` and `admin` are both in a vite dev server and can be started by `npm run dev` in the root
+  directory.
 
 ## Configuration notes
 
-- Vite/Tailwind integration via [frontend/vite.config.ts](frontend/vite.config.ts) and `@tailwindcss/vite`; CSS entry uses `@import "tailwindcss"` in [frontend/src/index.css](frontend/src/index.css).
+- Vite/Tailwind integration via [frontend/vite.config.ts](frontend/vite.config.ts) and `@tailwindcss/vite`; CSS entry
+  uses `@import "tailwindcss"` in [frontend/src/index.css](frontend/src/index.css).
 - Toasts wired in [frontend/src/main.tsx](frontend/src/main.tsx) with `react-toastify`.
-- Local state is stored in `localStorage` keys: `allItems`, `allLoans`, `userLoans`, `borrowableItems`. Cross‑component updates are signaled via window events from [`utils.fetchData`](frontend/src/utils/fetchData.ts).
+- Local state is stored in `localStorage` keys: `allItems`, `allLoans`, `userLoans`, `borrowableItems`. Cross‑component
+  updates are signaled via window events from [`utils.fetchData`](frontend/src/utils/fetchData.ts).
 
 ## API documentation
 
-Refer to the dedicated API docs:
-
-`docs/backend_API_docs/README.md`
+Refer to the dedicated [API-Docs](docs/backend_API_docs/README.md)
diff --git a/admin/nginx.conf b/admin/nginx.conf
index cbb9122..f8f14bb 100644
--- a/admin/nginx.conf
+++ b/admin/nginx.conf
@@ -14,7 +14,7 @@ server {
   }
 
   location /backend/ {
-    proxy_pass http://borrow_system-backend_v2:8004/;
+    proxy_pass http://borrow-system_backend:8004/;
   }
 
   location ~* \.(?:js|mjs|css|png|jpg|jpeg|gif|ico|svg|woff2?)$ {
diff --git a/changelog.md b/changelog.md
deleted file mode 100644
index 0882940..0000000
--- a/changelog.md
+++ /dev/null
@@ -1,29 +0,0 @@
-# Changelog for upcoming version: vX.X
-
-Introduction
-
-## New features
-
-- 
-
-## Improvements
-
-- 
-
-## Fixed bugs
-
-- 
-
----
-
-## New version numbers
-
-**Backend:** vX.X
-
-**Frontend:** vX.X
-
-**Admin panel:** vX.X
-
----
-
--[Theis](https://portfolio-theis.de)
diff --git a/docker-compose.prod.yml b/docker-compose.yml
similarity index 60%
rename from docker-compose.prod.yml
rename to docker-compose.yml
index 6f17e89..0ce66af 100644
--- a/docker-compose.prod.yml
+++ b/docker-compose.yml
@@ -1,43 +1,42 @@
 services:
   usr-frontend:
     container_name: borrow-system_usr-frontend
-    networks:
-      proxynet:
-        ipv4_address: 172.20.0.6
     build: ./frontend
-    restart: unless-stopped
+    environment:
+      VITE_BACKEND_URL: ${BACKEND_URL}
+    restart: always
 
   admin-frontend:
     container_name: borrow-system_admin-frontend
-    networks:
-      proxynet:
-        ipv4_address: 172.20.0.35
     build: ./admin
-    restart: unless-stopped
+    environment:
+      VITE_BACKEND_URL: ${BACKEND_URL}
+    restart: always
 
-  backend_v2:
+  backend:
     container_name: borrow-system_backend
-    networks:
-      proxynet:
-        ipv4_address: 172.20.0.5
     build: ./backend
     environment:
       NODE_ENV: production
-      DB_HOST: mysql_v2
+      DB_HOST: borrow-system_mysql
       DB_USER: root
-      DB_PASSWORD: ${DB_PASSWORD_V2}
+      DB_PASSWORD: ${DB_PASSWORD}
       DB_NAME: borrow_system_new
+      MAIL_HOST: ${MAIL_HOST}
+      MAIL_PORT: ${MAIL_PORT}
+      MAIL_USER: ${MAIL_USER}
+      MAIL_PASSWORD: ${MAIL_PASSWORD}
+      MAIL_SENDEES_CONTACT: ${MAIL_SENDEES_CONTACT}
+      MAIL_SENDEES: ${MAIL_SENDEES}
+      NAAS_URL: ${NAAS_URL}
     depends_on:
       - mysql_v2
-    restart: unless-stopped
+    restart: always
 
   mysql:
     container_name: borrow-system_mysql
-    networks:
-      proxynet:
-        ipv4_address: 172.20.0.12
     image: mysql:8.0
-    restart: unless-stopped
+    restart: always
     environment:
       MYSQL_ROOT_PASSWORD: ${DB_PASSWORD_V2}
       MYSQL_DATABASE: borrow_system_new
@@ -48,9 +47,6 @@ services:
 
   no-as-a-service:
     container_name: borrow-system_naas
-    networks:
-      proxynet:
-        ipv4_address: 172.20.0.36
     build:
       context: ./no-as-a-service
       dockerfile: Dockerfile
@@ -58,8 +54,4 @@ services:
 
 volumes:
   mysql-data:
-  mysql-v2-data:
-
-networks:
-  proxynet:
-    external: true
+  mysql-v2-data:
\ No newline at end of file
diff --git a/frontend/nginx.conf b/frontend/nginx.conf
index cbb9122..f8f14bb 100644
--- a/frontend/nginx.conf
+++ b/frontend/nginx.conf
@@ -14,7 +14,7 @@ server {
   }
 
   location /backend/ {
-    proxy_pass http://borrow_system-backend_v2:8004/;
+    proxy_pass http://borrow-system_backend:8004/;
   }
 
   location ~* \.(?:js|mjs|css|png|jpg|jpeg|gif|ico|svg|woff2?)$ {
diff --git a/package-lock.json b/package-lock.json
index bdc68ae..6d48584 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,8 +11,7 @@
       "workspaces": [
         "backend",
         "frontend",
-        "admin",
-        "shared"
+        "admin"
       ],
       "devDependencies": {
         "concurrently": "^10.0.6",
@@ -481,10 +480,6 @@
         "node": ">=6.9.0"
       }
     },
-    "node_modules/@borrow-system/shared": {
-      "resolved": "shared",
-      "link": true
-    },
     "node_modules/@chakra-ui/react": {
       "version": "3.37.0",
       "resolved": "https://registry.npmjs.org/@chakra-ui/react/-/react-3.37.0.tgz",
@@ -7484,6 +7479,7 @@
     "shared": {
       "name": "@borrow-system/shared",
       "version": "1.0.0",
+      "extraneous": true,
       "license": "ISC"
     }
   }
diff --git a/package.json b/package.json
index 959924d..05fa838 100644
--- a/package.json
+++ b/package.json
@@ -5,8 +5,7 @@
   "workspaces": [
     "backend",
     "frontend",
-    "admin",
-    "shared"
+    "admin"
   ],
   "description": "",
   "main": "index.js",
diff --git a/shared/package.json b/shared/package.json
deleted file mode 100644
index 82d94b0..0000000
--- a/shared/package.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "name": "@borrow-system/shared",
-  "private": "true",
-  "version": "1.0.0",
-  "type": "module",
-  "description": "",
-  "main": "index.js",
-  "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
-  },
-  "keywords": [],
-  "author": "",
-  "license": "ISC"
-}