Add dependencies for connecting to PostgreSQL

Dockerfile

@@ -1,16 +1,16 @@
 FROM python:3.12-alpine
 
 # Ensure that the environment uses UTF-8 encoding by default.
 ENV LANG en_US.UTF-8
 
 # Disable pip cache dir.
 ENV PIP_NO_CACHE_DIR 1
 
 # Allow pip install as root.
 ENV PIP_ROOT_USER_ACTION ignore
 
 # Stops Python default buffering to stdout, improving logging to the console.
 ENV PYTHONUNBUFFERED 1
 
 # Create a non-root user for the container.
 ARG USERNAME=app
@@ -26,7 +26,7 @@
     $USERNAME
 
 # Define app home and workdir.
 ENV APP_HOME /home/$USERNAME
 WORKDIR $APP_HOME
 
 # Copy the whole project except for what is in .dockerignore.
@@ -40,6 +40,7 @@
         \
         # Needed at runtime.
         apk add --no-cache \
+            libpq \
             libxslt \
             libxml2 \
         ; \
@@ -83,6 +84,6 @@
 
 ARG PORT=8000
 EXPOSE $PORT
 ENV PORT $PORT
 
 CMD python manage.py runserver 0.0.0.0:$PORT

requirements/base.txt

@@ -9,6 +9,7 @@ django-filter==24.3
 django-modelcluster==6.3
 djangorestframework==3.15.2
 djangorestframework-csv==3.0.0
+psycopg2-binary==2.9.9
 whitenoise==6.7.0
 
 # Ensure libxml2 is loaded dynamically; see