diff --git a/.github/workflows/lint_docker.yml b/.github/workflows/lint_docker.yml
new file mode 100644
index 0000000..2380717
--- /dev/null
+++ b/.github/workflows/lint_docker.yml
@@ -0,0 +1,65 @@
+name: Python Lint & Docker Build
+
+on:
+  push:
+    branches:
+      - 'main'
+  pull_request:
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup python
+        uses: actions/setup-python@v5
+        with:
+          cache: 'pip'
+
+      - name: Run flake8
+        uses: py-actions/flake8@v2
+        with:
+          exclude: "app/migrations/versions/"
+          path: "app"
+
+  build:
+    name: Build docker image
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=pr
+            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
+
+      - name: Build and push docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: app
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
diff --git a/.github/workflows/migrations.yml b/.github/workflows/migrations.yml
new file mode 100644
index 0000000..4c4674f
--- /dev/null
+++ b/.github/workflows/migrations.yml
@@ -0,0 +1,146 @@
+name: Check Migrations
+
+on:
+  pull_request:
+
+jobs:
+  detect-diffs:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      
+      - name: Changes in models directories
+        id: model-changes
+        uses: tj-actions/changed-files@v45
+        with:
+          path: "app/services"
+          files: "./*/models/**"
+
+      - name: Model changes output
+        env:
+          CHANGED_MODEL_FILES: ${{ steps.model-changes.outputs.all_changed_files }}
+        run: |
+          for file in "${CHANGED_MODEL_FILES}"; do
+            echo "$file was changed"
+          done
+
+      - name: Changes in migrations
+        id: migration-changes
+        uses: tj-actions/changed-files@v45
+        with:
+          path: "app/alembic/versions"
+          files: "*.py"
+
+      - name: Migration changes output
+        env:
+          CHANGED_MIGRATION_FILES: ${{ steps.migration-changes.outputs.all_changed_files }}
+        run: |
+          for file in ${CHANGED_MIGRATION_FILES}; do
+            echo "$file was changed"
+          done           
+    
+    outputs:
+      changed_migration_files: ${{ steps.migration-changes.outputs.all_changed_files }}
+      changed_model_files: ${{ steps.model-changes.outputs.all_changed_files }}
+
+    
+  prevent-changes:
+    runs-on: ubuntu-latest
+    needs: detect-diffs
+    steps:
+      - name: Checkout Repository 
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          ref: ${{ github.base_ref }}
+      
+      - name: prevent-changes-to-existing-migrations
+        run: |
+          EXISTING_MIGRATIONS=$(git ls-tree -r HEAD --name-only | grep "app/alembic/versions/.*\.py")
+          CHANGED_MIGRATION_FILES="${{ needs.detect-diffs.outputs.changed_migration_files }}"
+          
+          for changed_migration in $CHANGED_MIGRATION_FILES; do
+            if echo $EXISTING_MIGRATIONS | grep "$changed_migration"; then
+              echo "An already existing migration should not be edited!"
+              exit 1
+            fi
+          done
+  
+  check-missing-imports:
+    runs-on: ubuntu-latest
+    needs: detect-diffs
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Check for Missing imports in alembic
+        id: missing-imports
+        run: |
+          CHANGED_MODEL_FILES="${{ needs.detect-diffs.outputs.changed_model_files }}"
+
+          IMPORTS=$(grep -oP "from services\.\w+\.models\.\w+ import \w+" app/alembic/env.py)
+          MISSING_IMPORTS=()
+
+          for line in $CHANGED_MODEL_FILES; do
+            model_name=$(basename "$line" .py)
+            
+            if ! echo "$IMPORTS" | grep -q "$model_name"; then
+              MISSING_IMPORTS+=("$model_name")
+            fi
+          done
+
+          if [ ${#MISSING_IMPORTS[@]} -ne 0 ]; then
+            echo "You probably forget to import follwoing models within the alembic/env file: ${MISSING_IMPORTS[*]}"
+            exit 1
+          fi 
+
+  migrations:
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:17
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        env:
+          POSTGRES_HOST: localhost
+          POSTGRES_PORT: 5432
+          POSTGRES_USER: app
+          POSTGRES_PASSWORD: app
+          POSTGRES_DB: app
+        ports:
+          - "5432:5432"
+
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+
+      - name: Setup python
+        uses: actions/setup-python@v5
+        with:
+          cache: 'pip'
+
+      - name: Install requirements
+        working-directory: ./app
+        run: pip install -r requirements.txt
+      
+      - name: Create .env File
+        working-directory: ./app
+        run: |
+          echo "DATABASE_HOST=localhost" >> .env
+      
+      - name: Run Migrations UP
+        working-directory: ./app
+        run: alembic upgrade head
+
+      - name: Run alembic check
+        working-directory: ./app
+        run: |
+          alembic check
+       
+      - name: Run Migrations DOWN
+        working-directory: ./app
+        run: alembic downgrade base
diff --git a/app/main.py b/app/main.py
index 7fd2378..50f2932 100644
--- a/app/main.py
+++ b/app/main.py
@@ -4,7 +4,6 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from sqlalchemy.exc import OperationalError
-
 from utils.config import settings
 from utils.database.connection import engine
 
diff --git a/app/migrations/env.py b/app/migrations/env.py
index d7b4e3c..6bcb2fe 100644
--- a/app/migrations/env.py
+++ b/app/migrations/env.py
@@ -2,7 +2,6 @@
 
 from alembic import context
 from sqlalchemy import engine_from_config, pool
-
 from utils.database.connection import SQLALCHEMY_DATABASE_URL, Base
 
 # this is the Alembic Config object, which provides
diff --git a/app/models/contract.py b/app/models/contract.py
index b949ef1..9e3faa6 100644
--- a/app/models/contract.py
+++ b/app/models/contract.py
@@ -1,10 +1,9 @@
 from datetime import datetime
 from uuid import uuid4
 
+from models.static import ContractKeyEnum
 from sqlalchemy import Column, DateTime, Enum, String
 from sqlalchemy.dialects.postgresql import UUID
-
-from models.static import ContractKeyEnum
 from utils.database.connection import Base
 
 
diff --git a/app/models/customer.py b/app/models/customer.py
index 3a3c310..6798b8b 100644
--- a/app/models/customer.py
+++ b/app/models/customer.py
@@ -4,7 +4,6 @@
 from sqlalchemy import Column, DateTime, String
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
-
 from utils.database.connection import Base
 
 
diff --git a/app/models/customer_product.py b/app/models/customer_product.py
index 4b305ae..e338403 100644
--- a/app/models/customer_product.py
+++ b/app/models/customer_product.py
@@ -4,7 +4,6 @@
 from sqlalchemy import Column, DateTime, ForeignKey, Integer
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
-
 from utils.database.connection import Base
 
 
diff --git a/app/models/customer_product_contract.py b/app/models/customer_product_contract.py
index e563059..04075aa 100644
--- a/app/models/customer_product_contract.py
+++ b/app/models/customer_product_contract.py
@@ -2,7 +2,6 @@
 
 from sqlalchemy import Column, DateTime, ForeignKey
 from sqlalchemy.dialects.postgresql import UUID
-
 from utils.database.connection import Base
 
 
diff --git a/app/models/inbox_message.py b/app/models/inbox_message.py
index 79ede4c..bdb7f43 100644
--- a/app/models/inbox_message.py
+++ b/app/models/inbox_message.py
@@ -1,11 +1,10 @@
 from datetime import datetime
 from uuid import uuid4
 
+from models.static import MessageStatusEnum
 from sqlalchemy import Column, DateTime, Enum, ForeignKey, String, Text
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
-
-from models.static import MessageStatusEnum
 from utils.database.connection import Base
 
 
diff --git a/app/models/invoice.py b/app/models/invoice.py
index 51c9cb5..4902f44 100644
--- a/app/models/invoice.py
+++ b/app/models/invoice.py
@@ -1,11 +1,10 @@
 from datetime import datetime
 from uuid import uuid4
 
+from models.static import InvoiceStatusEnum
 from sqlalchemy import Column, DateTime, Enum, ForeignKey, Numeric
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
-
-from models.static import InvoiceStatusEnum
 from utils.database.connection import Base
 
 
diff --git a/app/models/product.py b/app/models/product.py
index 14edead..a30502c 100644
--- a/app/models/product.py
+++ b/app/models/product.py
@@ -4,7 +4,6 @@
 from sqlalchemy import Column, DateTime, String, Text
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
-
 from utils.database.connection import Base
 
 
diff --git a/app/models/product_plan.py b/app/models/product_plan.py
index 948de84..69f7502 100644
--- a/app/models/product_plan.py
+++ b/app/models/product_plan.py
@@ -1,11 +1,10 @@
 from datetime import datetime
 from uuid import uuid4
 
+from models.static import PlanTypeEnum
 from sqlalchemy import Boolean, Column, DateTime, Enum, ForeignKey, Numeric
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
-
-from models.static import PlanTypeEnum
 from utils.database.connection import Base
 
 
diff --git a/app/models/user.py b/app/models/user.py
index 780bb8c..174a4f3 100644
--- a/app/models/user.py
+++ b/app/models/user.py
@@ -1,11 +1,10 @@
 from datetime import datetime
 from uuid import uuid4
 
+from models.static import RoleEnum
 from sqlalchemy import Column, DateTime, Enum, ForeignKey, String
 from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.orm import relationship
-
-from models.static import RoleEnum
 from utils.database.connection import Base
 
 
diff --git a/app/models/voucher.py b/app/models/voucher.py
index 4acfab7..bd6d25e 100644
--- a/app/models/voucher.py
+++ b/app/models/voucher.py
@@ -11,7 +11,6 @@
     Text,
 )
 from sqlalchemy.dialects.postgresql import UUID
-
 from utils.database.connection import Base
 
 
diff --git a/app/utils/database/connection.py b/app/utils/database/connection.py
index ef26c4d..a5ff596 100644
--- a/app/utils/database/connection.py
+++ b/app/utils/database/connection.py
@@ -1,12 +1,12 @@
 from sqlalchemy import create_engine
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import sessionmaker
-
 from utils.config import settings
 
 SQLALCHEMY_DATABASE_URL = (
     f"postgresql://{settings.DATABASE_USERNAME}:{settings.DATABASE_PASSWORD}"
-    f"@{settings.DATABASE_HOSTNAME}:{settings.DATABASE_PORT}/{settings.DATABASE_NAME}"
+    f"@{settings.DATABASE_HOSTNAME}:{settings.DATABASE_PORT}"
+    f"/{settings.DATABASE_NAME}"
 )
 
 engine = create_engine(SQLALCHEMY_DATABASE_URL)
diff --git a/app/utils/database/session.py b/app/utils/database/session.py
index 519e81f..0a55951 100644
--- a/app/utils/database/session.py
+++ b/app/utils/database/session.py
@@ -1,5 +1,4 @@
 from sqlalchemy.orm import Session
-
 from utils.database.connection import SessionLocal