Use a simpler nginx.conf in dev

Makefile

@@ -1,13 +1,14 @@
 image = miti.sh
 
 run:
-	docker run --rm -it --init -v $(PWD):/opt/app -p 8080:80 $(image)
+	docker run --rm -it --init -v $(PWD):/opt/app -p 8080:80 $(image) \
+		sh -c "openresty -p /opt/app -g 'daemon off;' -c conf/dev.nginx.conf"
 
 build:
 	docker run --rm -w /opt/app -v $(PWD):/opt/app $(image) sitegen
 
 image-rm:
-	docker image rm $(image):latest
+	docker image rm $(image)
 
 image-build:
 	docker build -t $(image) .

conf/dev.nginx.conf

@@ -0,0 +1,33 @@
+worker_processes  1;
+error_log logs/error.log;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    server {
+        listen 80;
+
+        include mime.types;
+        charset utf-8;
+        default_type text/html;
+
+        try_files $uri $uri/ $uri.html =404;
+
+        # return `/posts/index.html` from `/posts`
+        location = /posts {
+            rewrite ^ /posts/ break;
+        }
+
+        # redirect requests ending in a forward slash
+        location ~ ^/(.+)/$ {
+            return 301 /$1;
+        }
+
+        location /css {
+            expires 1h;
+            alias css;
+        }
+    }
+}