diff --git a/backend/app/__pycache__/db_engine.cpython-313.pyc b/backend/app/__pycache__/db_engine.cpython-313.pyc
new file mode 100644
index 0000000..9301b60
Binary files /dev/null and b/backend/app/__pycache__/db_engine.cpython-313.pyc differ
diff --git a/backend/app/__pycache__/init_db.cpython-313.pyc b/backend/app/__pycache__/init_db.cpython-313.pyc
new file mode 100644
index 0000000..4394728
Binary files /dev/null and b/backend/app/__pycache__/init_db.cpython-313.pyc differ
diff --git a/backend/app/db_engine.py b/backend/app/db_engine.py
index e576a86..79ddf58 100644
--- a/backend/app/db_engine.py
+++ b/backend/app/db_engine.py
@@ -5,11 +5,11 @@ import os
 
 dotenv.load_dotenv()
 
-PG_USER = dotenv.get_key(".env", "PG_USER")
-PG_PASSWORD = dotenv.get_key(".env", "PG_PASSWORD")
-PG_HOST = dotenv.get_key(".env", "PG_HOST")
-PG_PORT = dotenv.get_key(".env", "PG_PORT")
-PG_DB = dotenv.get_key(".env", "PG_DB")
+PG_USER = dotenv.get_key(".env", "POSTGRES_USER")
+PG_PASSWORD = dotenv.get_key(".env", "POSTGRES_PASSWORD")
+PG_HOST = dotenv.get_key(".env", "POSTGRES_HOST")
+PG_PORT = dotenv.get_key(".env", "POSTGRES_PORT")
+PG_DB = dotenv.get_key(".env", "POSTGRES_DB")
 
 DATABASE_URL = (
     f"postgresql+asyncpg://{PG_USER}:{PG_PASSWORD}@{PG_HOST}:{PG_PORT}/{PG_DB}"
@@ -17,7 +17,7 @@ DATABASE_URL = (
 
 engine = create_async_engine(
     DATABASE_URL,
-    echo=False,     
+    echo=False,
     future=True,
 )
 
@@ -31,6 +31,7 @@ async_session_maker = async_sessionmaker(
 class Base(DeclarativeBase):
     pass
 
+
 async def get_async_session():
     async with async_session_maker() as session:
         yield session
@@ -39,4 +40,3 @@ async def get_async_session():
 async def init_db():
     async with engine.begin() as conn:
         await conn.run_sync(Base.metadata.create_all)
-
diff --git a/backend/app/init_db.py b/backend/app/init_db.py
new file mode 100644
index 0000000..d49ac06
--- /dev/null
+++ b/backend/app/init_db.py
@@ -0,0 +1,9 @@
+from app.db_engine import init_db
+
+from app.models.posts import Post
+
+
+if __name__ == "__main__":
+    import asyncio
+
+    asyncio.run(init_db())
diff --git a/backend/app/models/__init__.py b/backend/app/models/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/backend/app/models/__pycache__/__init__.cpython-313.pyc b/backend/app/models/__pycache__/__init__.cpython-313.pyc
new file mode 100644
index 0000000..bcc9114
Binary files /dev/null and b/backend/app/models/__pycache__/__init__.cpython-313.pyc differ
diff --git a/backend/app/models/__pycache__/posts.cpython-313.pyc b/backend/app/models/__pycache__/posts.cpython-313.pyc
new file mode 100644
index 0000000..575f418
Binary files /dev/null and b/backend/app/models/__pycache__/posts.cpython-313.pyc differ
diff --git a/backend/app/schemas/__init__.py b/backend/app/schemas/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/backend/app/schemas/guestbook.py b/backend/app/schemas/guestbook.py
new file mode 100644
index 0000000..e69de29
diff --git a/backend/app/schemas/posts.py b/backend/app/schemas/posts.py
new file mode 100644
index 0000000..154db42
--- /dev/null
+++ b/backend/app/schemas/posts.py
@@ -0,0 +1,30 @@
+from pydantic import BaseModel, Field
+from typing import Optional
+
+
+class PostCreate(BaseModel):
+    title: str = Field(min_length=3, max_length=150)
+    content: str = Field(min_length=10)
+    images: Optional[str] = Field()
+
+    class Config:
+        orm_mode = True
+
+
+class PostRead(BaseModel):
+    id: int = Field()
+    title: str = Field(min_length=3, max_length=150)
+    content: str = Field(min_length=10)
+    images: str = Field()
+
+    class Config:
+        orm_mode = True
+
+
+class PostUpdate(BaseModel):
+    title: str = Field(min_length=3, max_length=150)
+    content: str = Field(min_length=10)
+    images: Optional[str] = Field()
+
+    class Config:
+        orm_mode = True
diff --git a/backend/docker-compose.yml b/backend/docker-compose.yml
index a2e7d61..3ac78f0 100644
--- a/backend/docker-compose.yml
+++ b/backend/docker-compose.yml
@@ -1,8 +1,9 @@
 services:
   postgres:
     image: postgres:18-alpine3.22
+    restart: always
     ports:
-      - "5432:5432"
+     - "5432:5432"
     environment:
       POSTGRES_USER: ${POSTGRES_USER}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}