diff --git a/.gitignore b/.gitignore
index 6c4d819..c8e02b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -70,4 +70,3 @@ vendor/
 # Local dev configs
 config.yml
 config.yaml
-config.dev.yml
diff --git a/Makefile b/Makefile
index 22ac9c9..a074315 100644
--- a/Makefile
+++ b/Makefile
@@ -79,12 +79,15 @@ docker-versioned:
 docker-test:
 	@script/test
 
-# Run local dev server in Docker
+# Run local dev server in Docker, with debug on and a new random signing
+# key each run. Log in to the page with the key it prints.
 devserver: docker-versioned devserver-stop
+	@key="$$(head -c 32 /dev/urandom | base64)" && \
 	docker run -d --name pixad-dev -p 8080:8080 \
-		-v $(CURDIR)/config.dev.yml:/etc/pixa/config.yml:ro \
-		pixa:latest
-	@echo "pixad running at http://localhost:8080"
+		-e PIXA_SIGNING_KEY="$$key" -e PIXA_DEBUG=true \
+		pixa:latest >/dev/null && \
+	echo "pixad running at http://localhost:8080" && \
+	echo "signing key: $$key"
 
 # Stop dev server
 devserver-stop: