Container build: simplify & speed up, removing the final step running the app as a dedicated user

Containerfile

@@ -1,26 +1,23 @@
-FROM localhost/treetrail-backend-base
+# Build: podman build -t treetrail-backend-base -f Containerfile.base
 
-RUN <<EOT
-groupadd -r app
-useradd -r -d /app -g app -N app
-mkdir /var/lib/treetrail
-chown app: /var/lib/treetrail
-EOT
+FROM localhost/treetrail-backend-deps
 
-COPY --from=localhost/treetrail-backend-base --chown=app:app /app /app
+ENV PYTHONPATH $UV_PROJECT_ENVIRONMENT/lib/python3.12/site-packages
 
-USER app
-WORKDIR /app
+COPY . /src
 
-# Instances should override the prod.yaml file
-#COPY ./prod.yaml /etc/treetrail/prod.yaml
-#COPY ./dist/treetrail_backend-0.3.0.tar.gz /src/
+#RUN --mount=type=cache,target=/root/.cache \
+#  cd /src && \
+#  uv sync --locked --no-dev --no-editable
 
-#RUN uv pip install /src/treetrail_backend-0.3.0.tar.gz 
+RUN uv pip install \
+  --python=$UV_PROJECT_ENVIRONMENT \
+  --no-deps \
+  /src
 
 CMD [ \
   "uvicorn", "treetrail.application:app", \
   "--port", "8081", \
   #"--log-config", "/app/config/logging.yaml", \
   "--host", "0.0.0.0" \
-]
+  ]