Fixes #364 - hostname/domainame is required.

target/start-mailserver.sh

@@ -1,10 +1,18 @@
 #!/bin/bash
 
 die () {
-  echo >&2 "$@"
+  echo "## Configuration error:"
+  echo >&2 "> $@"
   exit 1
 }
 
+#
+# Check that hostname/domainname is provided (no default docker hostname)
+#
+if ( ! echo $(hostname) | grep -E '^(\S+[.]\S+)$' ); then
+  die "Setting hostname/domainname is required."
+fi
+
 #
 # Default variables
 #

test/tests.bats

@@ -1,3 +1,12 @@
+#
+# configuration checks
+#
+
+@test "checking configuration: hostname/domainname" {
+  run docker run `docker inspect --format '{{ .Config.Image }}' mail`
+  [ "$status" -eq 1 ]
+}
+
 #
 # processes
 #