Add health check

Dockerfile

@@ -6,7 +6,7 @@ ARG TW_BIN=./bin/tailwindcss
 WORKDIR /app
 COPY . /app
 
-RUN apt-get update && apt-get install -y --no-install-recommends build-essential curl libev-dev
+RUN apt-get update && apt-get install -y --no-install-recommends build-essential curl wget libev-dev
 
 RUN mkdir -p ./bin \
   && curl -sLO https://github.com/tailwindlabs/tailwindcss/releases/download/v${TW_VERSION}/tailwindcss-linux-x64 \

entrypoint.sh

@@ -1,6 +1,21 @@
 #!/bin/bash
 set -e
 
+echo "Starting server..."
+.qlot/bin/clackup --system hp --server woo --address 0.0.0.0 --port 3000 src/app.lisp &
+
+SERVER_PID=$!
+
+echo "Waiting for server to be ready..."
+for i in {1..10}; do
+  if curl -s -o /dev/null -w "%{http_code}" -I http://0.0.0.0:3000 | grep -q "200"; then
+    echo "Server is up."
+    break
+  fi
+  echo "Server not ready yet... retrying ($i)"
+  sleep 5
+done
+
 if [[ -n "$CLOUDFLARE_ZONE_ID" && -n "$CLOUDFLARE_API_KEY" ]]; then
   echo "Purging Cloudflare cache..."
   curl -s -X POST "https://api.cloudflare.com/client/v4/zones/${CLOUDFLARE_ZONE_ID}/purge_cache" \
@@ -11,5 +26,4 @@ else
   echo "Cloudflare credentials not provided. Skipping cache purge."
 fi
 
-echo "Starting server..."
-exec .qlot/bin/clackup --system hp --server woo --address 0.0.0.0 --port 3000 src/app.lisp
+wait $SERVER_PID

src/routes/index.lisp

@@ -1,7 +1,8 @@
 (defpackage #:hp/routes/index
   (:use #:cl
         #:hsx)
-  (:export #:handle-get))
+  (:export #:handle-get
+           #:handle-head))
 (in-package #:hp/routes/index)
 
 (defparameter *links*
@@ -30,3 +31,7 @@
   (declare (ignore params))
   (list :body (~page)
         :cache :static))
+
+; for health check
+(defun handle-head (params)
+  (declare (ignore params)))