Fix up build infrastructure for pq.

.github/workflows/build.yaml

@@ -24,3 +24,10 @@ jobs:
         image: ${{ github.repository }}-hinfo
         github_token: ${{ secrets.GITHUB_TOKEN }}
         dockerfile: Dockerfile.hinfo
+
+    - name: Build pqserver
+      uses: lsst-sqre/build-and-push-to-ghcr@v1
+      with:
+        image: ${{ github.repository }}-pq
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        dockerfile: Dockerfile.pqserver

Dockerfile.pqserver

@@ -1,8 +1,12 @@
 FROM python:3.11
-RUN pip install flask gunicorn sqlalchemy
-WORKDIR /consdb-server
-COPY src/server.py /consdb-server/
+RUN pip install flask gunicorn sqlalchemy psycopg2
+WORKDIR /consdb-pq
+COPY python/lsst/consdb/pqserver.py python/lsst/consdb/utils.py /consdb-pq/
 # Environment variables that must be set:
-# POSTGRES_URL
-ENTRYPOINT [ "gunicorn", "-b", "0.0.0.0:8000", "-w", "2", "server:app" ]
+# DB_HOST DB_PASS DB_USER DB_NAME or POSTGRES_URL
+
+# Expose the port.
+EXPOSE 8080
+
+ENTRYPOINT [ "gunicorn", "-b", "0.0.0.0:8080", "-w", "2", "pqserver:app" ]