Spec out a conditional TLS inclusion patch

sbin/entrypoint.sh

@@ -6,12 +6,19 @@ set -eu -o pipefail
 run_jekyll() {
   set -eu
 
-  jekyll serve \
-    --port "$JEKYLL_PORT" \
-    --host "$JEKYLL_HOST" \
-    --ssl-cert "$JEKYLL_SSL_CERT" \
-    --ssl-key "$JEKYLL_SSL_KEY" \
-    --trace
+  local args="--port $JEKYLL_PORT --host $JEKYLL_HOST --trace"
+
+  # Note(decentral1se): handle the case where the Dokku is deploying the app
+  # with HTTP support only before we have a chance to deploy the lets encrypt
+  # certificates and mount them into the container
+  if [ -f "$JEKYLL_SSL_CERT" ]; then
+    args="${args} --ssl-cert $JEKYLL_SSL_CERT"
+  fi
+  if [ -f "$JEKYLL_SSL_KEY" ]; then
+    args="${args} --ssl-key $JEKYLL_SSL_KEY"
+  fi
+
+  jekyll serve "$args"
 }
 
 # Main entrypoint