Add wget to docker image for healthcheck

Dockerfile

@@ -1,7 +1,11 @@
 FROM nginx:latest
 
+# Install wget for healthchecks
+RUN apt-get update && apt-get install -y wget && rm -rf /var/lib/apt/lists/*
+
 # Remove the default Nginx configuration file
 RUN rm /etc/nginx/conf.d/default.conf
+
 # Copy our custom configuration
 COPY nginx.conf /etc/nginx/conf.d/jmpgames.conf