1 files changed, 12 insertions, 0 deletions
diff --git a/Dockerfile b/Dockerfile
index aa35a8f..aa7c1ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -46,6 +46,18 @@ RUN apt update \
     sudo \
  && apt clean
 
+# Generate OpenDKIM keypair
+# Do this here so we can print the pubkey/dns record to logs during build
+# process.  After initial run, a volume should preserve the keys for later
+# runs.
+RUN mkdir -p /opendkim \
+ && chown opendkim:opendkim /opendkim \
+ && opendkim-genkey \
+    --bits=1024 \
+    --directory=/opendkim \
+    --selector=default \
+ && cat /opendkim/default.txt
+
 # Install files
 COPY dovecot /etc/dovecot/
 COPY opendkim /etc/