Resolve "Add RabbitMQ for MessageBus triggers"

Closes #1 (closed)

\approve @ds @gislars

Dockerfile

@@ -19,5 +19,5 @@ RUN apt-get update \
 WORKDIR /tmp
 RUN git clone https://github.com/omniti-labs/pg_amqp.git
 WORKDIR /tmp/pg_amqp
-RUN make -I /usr/include/postgresql/13/server/postgres.h
+RUN env PG_CONFIG=/usr/bin/pg_config make -I /usr/include/postgresql/13/server
 run make install