make dockerfile use uv and separate dependency stages to improve caching for local builds

Author: BigSpaceships

Dockerfile

@@ -16,17 +16,17 @@ COPY frontend /opt/conditional/frontend
 
 RUN npm run webpack
 
-FROM docker.io/python:3.12-slim-bookworm
+FROM astral/uv:python3.12-bookworm-slim
 MAINTAINER Computer Science House <webmaster@csh.rit.edu>
 
 WORKDIR /opt/conditional
 
 COPY requirements.txt /opt/conditional
 
 RUN apt-get -yq update && \
-    apt-get -yq install libsasl2-dev libldap2-dev libldap-common libssl-dev gcc g++ make && \
-    pip install -r requirements.txt && \
-    apt-get -yq clean all
+    apt-get -yq install libsasl2-dev libldap2-dev libldap-common libssl-dev gcc g++ make
+RUN uv pip install --system -r requirements.txt
+RUN apt-get -yq clean all
 
 ARG PORT=8080
 ENV PORT=${PORT}