Allow user to provide Amavis configuration (#299)

* Add the option of manually specifying paths to SSL certificates

* Adding tests for manual SSL changes

* Allow user provided configuration of amavis

test/config/amavis.cf

@@ -0,0 +1,14 @@
+use strict;
+
+#
+# Place your configuration directives here.  They will override those in
+# earlier files.
+#
+# See /usr/share/doc/amavisd-new/ for documentation and examples of
+# the directives you can use in this file
+#
+
+# Test Verification
+
+#------------ Do not modify anything below this line -------------
+1;  # ensure a defined return

test/tests.bats

@@ -661,13 +661,23 @@
   [ "$status" -eq 0 ]
 }
 
+#
+# amavis
+#
+
+@test "checking amavis: config overrides" {
+  run docker exec mail /bin/sh -c "grep 'Test Verification' /etc/amavis/conf.d/50-user | wc -l"
+  [ "$status" -eq 0 ]
+  [ "$output" -eq 1 ]
+}
+
 #
 # setup.sh
 #
 
 # CLI interface
 @test "checking setup.sh: Without arguments: status 1, show help text" {
-  run ./setup.sh 
+  run ./setup.sh
   [ "$status" -eq 1 ]
   [ "${lines[0]}" = "Usage: ./setup.sh [-i IMAGE_NAME] [-c CONTAINER_NAME] <subcommand> <subcommand> [args]" ]
 }