fix(docker): missing curl installation for health check

Closes #725.

Author: gildesmarais

Dockerfile

@@ -43,6 +43,7 @@ ARG UID=991
 ARG GID=991
 
 RUN apk add --no-cache \
+  'curl>=8' \
   'gcompat>=0' \
   'tzdata>=2024' \
   'libxml2>=2' \

Rakefile

@@ -51,6 +51,19 @@ task :test do
   Output.describe 'Listing docker containers matching html2rss-web-test filter'
   sh 'docker ps -a --filter name=html2rss-web-test'
 
+  Output.describe 'Expect health status to be healthy'
+  5.times do
+    health_status = `docker inspect --format='{{.State.Health.Status}}' html2rss-web-test`.strip
+
+    if health_status == 'healthy'
+      puts '✅ Health status reports healthy'
+      break
+    else
+      putc '.'
+      sleep 1
+    end
+  end
+
   Output.describe 'Generating feed from a html2rss-configs config'
   sh 'curl -f http://127.0.0.1:3000/dfs.de/pressemitteilungen.rss || exit 1'