Upgrade Python from 3.8 to 3.13 and update dependencies

Dockerfile

@@ -1,11 +1,9 @@
-FROM tiangolo/uvicorn-gunicorn-fastapi:python3.8
+FROM python:3.13-slim
 
 WORKDIR /app/
 
 # Install Poetry
-RUN curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/get-poetry.py | POETRY_HOME=/opt/poetry python && \
-    cd /usr/local/bin && \
-    ln -s /opt/poetry/bin/poetry && \
+RUN pip install poetry && \
     poetry config virtualenvs.create false
 
 # Copy poetry.lock* in case it doesn't exist in the repo
@@ -22,4 +20,7 @@ ARG INSTALL_JUPYTER=false
 RUN bash -c "if [ $INSTALL_JUPYTER == 'true' ] ; then pip install jupyterlab ; fi"
 
 COPY . /app
-ENV PYTHONPATH=/app
+ENV PYTHONPATH=/app
+
+EXPOSE 80
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "80"]

app/config.py

@@ -1,6 +1,7 @@
 from typing import Any, Dict, Optional
 
-from pydantic import BaseSettings, PostgresDsn, validator
+from pydantic import PostgresDsn, field_validator
+from pydantic_settings import BaseSettings
 
 
 class Settings(BaseSettings):
@@ -11,26 +12,21 @@ class Settings(BaseSettings):
 
     SQLALCHEMY_DATABASE_URI: Optional[PostgresDsn] = None
 
-    @validator("SQLALCHEMY_DATABASE_URI", pre=True)
-    def assemble_db_connection(cls, v: Optional[str], values: Dict[str, Any]) -> Any:
+    @field_validator("SQLALCHEMY_DATABASE_URI", mode="before")
+    @classmethod
+    def assemble_db_connection(cls, v: Optional[str], info) -> Any:
         if isinstance(v, str):
             return v
+        values = info.data
         return PostgresDsn.build(
             scheme="postgresql",
-            user=values.get("POSTGRES_USER"),
+            username=values.get("POSTGRES_USER"),
             password=values.get("POSTGRES_PASSWORD"),
             host=values.get("POSTGRES_SERVER"),
             path=f"/{values.get('POSTGRES_DB') or ''}",
         )
 
-    class Config:
-        case_sensitive = True
-
-        # If you want to read environment variables from a .env
-        # file instead un-comment the below line and create the
-        # .env file at the root of the project.
-
-        # env_file = ".env"
+    model_config = {"case_sensitive": True, "env_file": ".env"}
 
 
 settings = Settings()

app/db/session.py

@@ -3,5 +3,5 @@
 
 from ..config import settings
 
-engine = create_engine(settings.SQLALCHEMY_DATABASE_URI, pool_pre_ping=True)
+engine = create_engine(str(settings.SQLALCHEMY_DATABASE_URI), pool_pre_ping=True)
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)