Dockerfile added

Dockerfile

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+FROM alpine:3.21
+
+ENV PGHOST="database.database1.svc.cluster.local"
+ENV PGDATABASE="udi-hottis"
+ENV PGUSER="pv-energy-calculator"
+ENV PGPASSWORD="-"
+ENV PGSSLMODE="require"
+
+ARG USER="user"
+
+RUN \
+  apk add --no-cache postgresql16-client && \
+  addgroup $USER && \
+  adduser -G $USER -D $USER 
+
+USER $USER
+WORKDIR /home/$USER
+
+COPY ./queries/pvec.sql .
+
+CMD [ "psql", "-f", "pvec.sql" ]
+