create derivation for book

default.nix

@@ -0,0 +1,20 @@
+{
+  stdenvNoCC,
+  mdbook,
+}:
+stdenvNoCC.mkDerivation {
+  pname = "wiki";
+  version = "latest";
+  src = ./.;
+  buildInputs = [mdbook];
+  buildPhase = ''
+    mdbook build
+  '';
+  installPhase = ''
+    mkdir -p $out/share/nginx
+    cp -r book $out/share/nginx/html
+    mkdir -p $out/etc/nginx/conf.d
+    cp nginx.conf $out/etc/nginx/conf.d/default.conf
+    sed -i "s@/usr@$out@" $out/etc/nginx/conf.d/default.conf
+  '';
+}

nginx.conf

@@ -0,0 +1,11 @@
+server {
+  listen       80;
+  listen  [::]:80;
+  server_name  localhost;
+
+  location / {
+      root   /usr/share/nginx/html;
+      index  index.html index.htm;
+      try_files $uri $uri/ /index.html;
+  }
+}