diff --git a/.github/workflows/ms5.yaml b/.github/workflows/ms5.yaml
new file mode 100644
index 0000000..d18b10a
--- /dev/null
+++ b/.github/workflows/ms5.yaml
@@ -0,0 +1,65 @@
+name: Pylint and API Testing
+
+on:
+  push:
+    branches: [Milestone-5_feature_branch]
+
+jobs:
+  test-and-lint:
+    runs-on: self-hosted  # or ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.10"]
+
+    steps:
+      #Checkout code
+      - uses: actions/checkout@v2  # Updated to correct version
+
+      #Set up Python
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      #Install everything
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install pylint flask flask_cors flasgger pytest
+
+      #Run pylint on all Python files
+      - name: Analyze code with pylint, excluding main.py
+        run: |
+          pylint $(git ls-files '*.py')
+
+      #Build Docker Image for API
+      - name: Build API Docker Image
+        run: |
+          docker build -t api-image -f Backend/dockerfile .
+
+
+      # Stop and Remove Existing Container (if any). this was the error
+      - name: Stop and Remove Existing API Container
+        run: |
+          docker stop api-container || true  # Stop if running, ignore if not
+          sleep 10
+          docker rm api-container || true  # Remove if exists, ignore if not
+          sleep 1
+
+      #Start API Container
+      - name: Start API Container
+        run: |
+          docker run -d -p 5000:5000 --name api-container --memory=7g api-image  # Start container on port 5000
+
+      #Run all Python tests in the directory
+      - name: Run the Python tests in directory
+        run: |
+
+      #docker exec api-container python3 main.py  # Execute main.py
+        #docker exec api-container pytest test_main.py  # Execute test_main.py
+
+      #Stop and Remove API Container after tests
+      - name: Stop and Remove API Container
+        run: |
+          docker stop api-container  # Stop container after tests
+          docker rm api-container  # Remove container after tests
diff --git a/Backend/__pycache__/PetFuc.cpython-310.pyc b/Backend/__pycache__/PetFuc.cpython-310.pyc
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diff --git a/Backend/__pycache__/UserFuc.cpython-310.pyc b/Backend/__pycache__/UserFuc.cpython-310.pyc
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diff --git a/Backend/__pycache__/test_main.cpython-310-pytest-8.3.3.pyc b/Backend/__pycache__/test_main.cpython-310-pytest-8.3.3.pyc
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diff --git a/Backend/dockerfile b/Backend/dockerfile
new file mode 100644
index 0000000..fd397fc
--- /dev/null
+++ b/Backend/dockerfile
@@ -0,0 +1,30 @@
+# Use Python as the base image
+FROM python:3.8-slim-buster
+
+# Install pip and Python dependencies
+RUN apt-get update && apt-get install -y python3 python3-pip
+
+# Keeps Python from generating .pyc files in the container
+ENV PYTHONDONTWRITEBYTECODE=1
+
+# Turns off buffering for easier container logging
+ENV PYTHONUNBUFFERED=1
+
+
+# Set the working directory in the container
+WORKDIR /app
+
+
+# Install pip requirements
+COPY Backend/requirements.txt .
+RUN python3 -m pip install -r requirements.txt
+
+# Copy main application file
+COPY Backend/main.py .
+
+# Set the port for the application
+ENV PORT=5000
+EXPOSE 5000
+
+# Command to run the application
+CMD ["python3", "main.py"]
diff --git a/Backend/main.py b/Backend/main.py
new file mode 100644
index 0000000..dcc2f6c
--- /dev/null
+++ b/Backend/main.py
@@ -0,0 +1,36 @@
+""" This module is the main entry point for the pet adoption web application.
+It defines routes and their functions for managing pets and user information. """
+from flask import Flask, request, jsonify
+from pet_func import get_random_pet
+from user_func import add_user_favorite, remove_user_favorite, replace_user_location
+
+app = Flask(__name__)
+
+# Example user information
+user_acc_info = {"Name": "Eric", "Location": "Connecticut", "Occupation": "Student"}
+
+@app.route("/get_random_pet", methods=["GET"])
+def get_random_pet_endpoint():
+    """Fetch and return random pet information for the homepage."""
+    return get_random_pet(), 200
+
+@app.route("/add_user_favorite", methods=["POST"])
+def add_user_favorite_endpoint():
+    """Add a user's favorite pet to the database."""
+    json_data = request.get_json()
+    return jsonify(add_user_favorite(json_data)), 200
+
+@app.route("/remove_user_favorite", methods=["DELETE"])
+def remove_user_favorite_endpoint():
+    """Remove a user's favorite pet from the database."""
+    json_data = request.get_json()
+    return jsonify(remove_user_favorite(json_data)), 200
+
+@app.route("/change_user_location", methods=["PUT"])
+def replace_user_information():
+    """Change a user's account location."""
+    new_location = request.get_json()
+    return jsonify(replace_user_location(new_location)), 200
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=5000, debug=True)
diff --git a/Backend/pet_func.py b/Backend/pet_func.py
new file mode 100644
index 0000000..6638903
--- /dev/null
+++ b/Backend/pet_func.py
@@ -0,0 +1,11 @@
+""" This module handles pet-related functionalities, providing details about random pets.
+It uses the Flask framework to return pet information in a JSON format. """
+from flask import jsonify
+
+def get_random_pet():
+    """Return a random pet's information."""
+    randomint = "9"  # API generates a random integer representing a PET ID
+    # API accesses database and returns information associated with the random ID
+    # Returns information such as profile picture of the pet
+    return jsonify({"id": randomint, "name": "Sam", "sex": "Male", "Age": "8",
+                    "location": "Connecticut", "Breed": "Pug"})  # Return pet details
diff --git a/Backend/requirements.txt b/Backend/requirements.txt
new file mode 100644
index 0000000..f0b9a8a
--- /dev/null
+++ b/Backend/requirements.txt
@@ -0,0 +1,7 @@
+Flask==2.0.3
+requests==2.26.0
+pandas==1.3.4
+pytest==7.2.1
+flask_cors==3.0.10
+#Werkzeug==2.1.3
+
diff --git a/Backend/test_main.py b/Backend/test_main.py
new file mode 100644
index 0000000..ad27f16
--- /dev/null
+++ b/Backend/test_main.py
@@ -0,0 +1,44 @@
+""" This module contains unit tests for the pet adoption web application, testing the functionality
+of various endpoints. It uses the requests library to simulate HTTP requests. """
+import requests
+
+def test_get_random_pet():
+    """Test for http://localhost:5000/get_random_pet."""
+    url = "http://localhost:5000"
+    response = requests.get(f"{url}/get_random_pet", timeout=10)
+    expected_response = {"id": "9", "name": "Sam", "sex": "Male", "Age": "8",
+                         "location": "Connecticut", "Breed": "Pug"}
+    assert response.json() == expected_response
+
+def test_add_user_favorite():
+    """Test for http://localhost:5000/add_user_favorite."""
+    url = "http://localhost:5000"
+    favorite_pet1 = {"id": "9", "name": "Sam", "sex": "Male", "Age": "8",
+                     "location": "Connecticut", "Breed": "Pug"}
+    response = requests.post(f"{url}/add_user_favorite", json=favorite_pet1, timeout=10)
+    assert response.json() == [favorite_pet1]
+    favorite_pet2 = {"id": "90", "name": "Ben", "sex": "Male", "Age": "2",
+                     "location": "New York", "Breed": "Husky"}
+    response = requests.post(f"{url}/add_user_favorite", json=favorite_pet2, timeout=10)
+    assert response.json() == [favorite_pet1, favorite_pet2]
+
+def test_remove_user_favorite():
+    """Test for http://localhost:5000/remove_user_favorite."""
+    url = "http://localhost:5000"
+    favorite_pet1 = {"id": "9", "name": "Sam", "sex": "Male", "Age": "8",
+                     "location": "Connecticut", "Breed": "Pug"}
+    response = requests.delete(f"{url}/remove_user_favorite", json=favorite_pet1, timeout=10)
+    assert response.json() == []
+    favorite_pet2 = {"id": "90", "name": "Ben", "sex": "Male", "Age": "2",
+                     "location": "New York", "Breed": "Husky"}
+    response = requests.delete(f"{url}/remove_user_favorite", json=favorite_pet2, timeout=10)
+    assert response.json() == []
+
+def test_change_user_location():
+    """Test for http://localhost:5000/change_user_location."""
+    url = "http://localhost:5000"
+    response = requests.put(f"{url}/change_user_location", json={"Location": "New York"},
+                            timeout=10)
+    assert response.json() == {"Location": "New York", "Name": "Eric", "Occupation":
+                               "Student", "Password": "2020"}
+    
\ No newline at end of file
diff --git a/Backend/user_func.py b/Backend/user_func.py
new file mode 100644
index 0000000..51ff4ad
--- /dev/null
+++ b/Backend/user_func.py
@@ -0,0 +1,26 @@
+""" This module handles user-related functionalities such as 
+managing favorites and updating user information. """
+
+user_favorite_database = []  # Simulate a database for user favorites
+user_acc_info = {
+    "Name": "Eric",
+    "Password": "2020",
+    "Location": "Connecticut",
+    "Occupation": "Student"
+}
+
+def add_user_favorite(json_data):
+    """Add user favorite pet to the database."""
+    user_favorite_database.append(json_data)
+    return user_favorite_database  # Return updated user favorites database
+
+def remove_user_favorite(json_data):
+    """Remove user favorite pet from the database."""
+    user_favorite_database.remove(json_data)
+    return user_favorite_database  # Return updated user favorites database
+
+def replace_user_location(new_location):
+    """Change the user account location."""
+    new_location = new_location.get("Location")
+    user_acc_info["Location"] = new_location  # Set new location associated with the user
+    return user_acc_info  # Return updated user account information
diff --git a/Frontend/hi.txt b/Frontend/hi.txt
new file mode 100644
index 0000000..53a199a
--- /dev/null
+++ b/Frontend/hi.txt
@@ -0,0 +1 @@
+I'm just testing the ci/cd :)
\ No newline at end of file
diff --git a/Frontend/index.html b/Frontend/index.html
new file mode 100644
index 0000000..e69de29