diff --git a/Dockerfile b/Dockerfile
index 8c5768c..3269e18 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,14 +1,19 @@
 FROM zonemaster/engine:local AS build
 
 RUN apk add --no-cache \
+    build-base \
     make \
     perl-app-cpanminus \
+    perl-dev \
     perl-json-xs \
     perl-lwp-protocol-https \
     perl-mojolicious \
     perl-test-deep \
     perl-test-differences \
+    perl-test-nowarnings \
     perl-try-tiny \
+ && cpanm --notest --no-wget --from https://cpan.metacpan.org/ \
+    https://cpan.metacpan.org/authors/id/E/ET/ETHER/Net-IDN-Encode-2.501-TRIAL.tar.gz \
  && cpanm --notest --no-wget --from https://cpan.metacpan.org/ \
     JSON::Validator