added EXTRA_CONF for 9.6-2.4 (#208)

* added EXTRA_CONF

https://github.com/kartoza/docker-postgis/issues/207

* added EXTRA_CONF

https://github.com/kartoza/docker-postgis/issues/207

* added EXTRA_CONF 

https://github.com/kartoza/docker-postgis/issues/207

* added install script

* added working example based on ubunty 18.04

* additional block inot needed

Dockerfile

@@ -2,17 +2,18 @@
 FROM debian:stable
 MAINTAINER Tim Sutton<tim@kartoza.com>
 
-RUN apt -y update; apt -y install gnupg2 wget ca-certificates rpl pwgen
-RUN sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ stretch-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
-RUN wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -
+ARG DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get -y update && \
+    apt-get -y install lsb-release wget software-properties-common gnupg2 && \
+    sh -c 'echo OS: `lsb_release -cs`'  
+RUN sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list' && \
+    wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add -
+RUN apt-get -y update && apt-get -y upgrade && apt-get -y install postgresql-9.6
+RUN apt-get -y install postgresql-client-9.6 postgresql-common postgresql-9.6-postgis-2.4 postgresql-9.6-pgrouting netcat
 
 #-------------Application Specific Stuff ----------------------------------------------------
 
-# We add postgis as well to prevent build errors (that we dont see on local builds)
-# on docker hub e.g.
-# The following packages have unmet dependencies:
-RUN apt -y update; apt install -y postgresql-client-9.6 postgresql-common postgresql-9.6 postgresql-9.6-postgis-2.4 postgresql-9.6-pgrouting netcat
-
 # Open port 5432 so linked containers can see them
 EXPOSE 5432
 

README.md

@@ -108,6 +108,11 @@ PostgreSQL listens to you can define it with the following environment variable.
 all connections.
 * -e IP_LIST=<*>
 
+#### Additional configuration
+
+You can also define any other configuration to add to `postgres.conf`, separated by '\n' e.g.:
+
+* `-e EXTRA_CONF="log_destination = 'stderr'\nlogging_collector = on"`
 
 
 ## Convenience docker-compose.yml

env-data.sh

@@ -66,3 +66,7 @@ fi
 if [ ! -z "$POSTGRES_DB" ]; then
 	POSTGRES_DBNAME=${POSTGRES_DB}
 fi
+
+if [ -z "$EXTRA_CONF" ]; then
+    EXTRA_CONF=""
+fi

setup-conf.sh

@@ -28,3 +28,4 @@ EOF
 echo "kernel.shmmax=543252480" >> /etc/sysctl.conf
 echo "kernel.shmall=2097152" >> /etc/sysctl.conf
 
+echo -e $EXTRA_CONF >> $CONF