Add initial docker setup for pgsql, mq, redis

pgsql/Dockerfile

@@ -0,0 +1,18 @@
+FROM debian:stretch
+LABEL maintainer "Jan Dittberner <jan@dittberner.info>"
+
+RUN apt-get update \
+    && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+    dumb-init \
+    postgresql \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*.*
+
+EXPOSE 5432
+
+VOLUME /var/lib/postgresql/
+COPY pg_hba.conf /etc/postgresql/9.6/main/pg_hba.conf
+COPY startup.sh /srv/
+
+ENTRYPOINT ["dumb-init"]
+CMD "/srv/startup.sh"