diff --git a/Containerfile b/Containerfile
index fb850fc..57ee30e 100644
--- a/Containerfile
+++ b/Containerfile
@@ -6,7 +6,7 @@ WORKDIR /app
 
 # Install system dependencies
 RUN apt-get update && apt-get install -y \
-    build-essential \
+    build-essential curl \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy Gemfile and Gemfile.lock
diff --git a/TLDR.md b/TLDR.md
index 6d8bf75..be16a6e 100644
--- a/TLDR.md
+++ b/TLDR.md
@@ -6,6 +6,6 @@ cd no-as-a-service
 bundle install
 ruby app.rb
 
-# Or build container:
-podman build -t naas .
+# Or build container, format docker so healthcheck works:
+podman build --format=docker -t naas .
 podman run -p 4567:4567 naas