Add the apt source when installing potgres.

Replace the host with $DB_PORT, which is dependent to the database imagae's exposed port.

dockerfiles/images/gogits/deploy.sh

@@ -14,6 +14,8 @@ if [ $DB_TYPE = "postgres" ]
   then
   # Add the postgres in gogs image.
   apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8
+  echo "deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main" > /etc/apt/sources.list.d/pgdg.list
+  apt-get update
   apt-get -y -q install python-software-properties software-properties-common
   apt-get -y -q install postgresql-9.3 postgresql-client-9.3 postgresql-contrib-9.3
 fi
@@ -24,7 +26,9 @@ fi
 # DB_PORT_3306_TCP_PORT=3306
 # DB_PORT_3306_TCP_PROTO=tcp
 # DB_PORT_3306_TCP_ADDR=172.17.0.2
-sed -i "/HOST = 127.0.0.1:3306/c\HOST = $DB_PORT_3306_TCP_ADDR:$DB_PORT_3306_TCP_PORT" $GOPATH/src/github.com/gogits/gogs/conf/app.ini
+#sed -i "/HOST = 127.0.0.1:3306/c\HOST = $DB_PORT_3306_TCP_ADDR:$DB_PORT_3306_TCP_PORT" $GOPATH/src/github.com/gogits/gogs/conf/app.ini
+sed -i "/HOST = 127.0.0.1:3306/c\HOST = `echo $DB_PORT | cut -d '/' -f 3`" $GOPATH/src/github.com/gogits/gogs/conf/app.ini
+
 cd $GOPATH/src/github.com/gogits/gogs/ 
 
 # The sudo is a must here, or the go within docker container won't get the current user by os.Getenv("USERNAME")