Use ffi for config

config.moon

@@ -1,5 +1,13 @@
 config = require "lapis.config"
 
+ffi = actualrequire("ffi")
+ffi.cdef [[
+  char *getenv(const char *name)
+]]
+
+getenv = (name) ->
+  ffi.string ffi.C.getenv name
+
 config "development", ->
   port 8080
 
@@ -15,8 +23,8 @@ config "docker", ->
 
   postgres ->
     backend "pgmoon"
-    port os.getenv "POSTGRESQL_PORT_5432_TCP_PORT"
-    host os.getenv "POSTGRESQL_PORT_5432_TCP_ADDR"
-    user os.getenv "DB_USER"
-    password os.getenv "DB_PASS"
-    database os.getenv "DB_NAME"
+    port getenv "POSTGRESQL_PORT_5432_TCP_PORT"
+    host getenv "POSTGRESQL_PORT_5432_TCP_ADDR"
+    user getenv "DB_USER"
+    password getenv "DB_PASS"
+    database getenv "DB_NAME"

nginx.conf

@@ -16,6 +16,7 @@ http {
     location / {
       default_type text/html;
       content_by_lua '
+        actualrequire = require
         require = require"require".require
         require("moonscript")
         require("lapis").serve("app")