🐛 Fix env schema

https://env.t3.gg/docs/recipes

src/env.js

@@ -31,10 +31,23 @@ const env = createEnv({
    */
   client: {
     // NEXT_PUBLIC_CLIENTVAR: z.string().min(1),
-    NEXT_PUBLIC_DEFAULT_COLOR_SCHEME: z.enum(['light', 'dark']).optional().default('light'),
     NEXT_PUBLIC_PORT: portSchema,
     NEXT_PUBLIC_NODE_ENV: envSchema,
-    NEXT_PUBLIC_DOCKER_ENABLED: z.boolean().optional().default(false),
+    NEXT_PUBLIC_DEFAULT_COLOR_SCHEME: z
+      .string()
+      .toLowerCase()
+      .refine((s) => s === 'light' || s === 'dark')
+      .optional()
+      .default('light'),
+    NEXT_PUBLIC_DOCKER_ENABLED: z
+      .string()
+      .toLowerCase()
+      // only allow "true" or "false"
+      .refine((s) => s === 'true' || s === 'false')
+      // transform to boolean
+      .transform((s) => s === 'true')
+      .optional()
+      .default('false'),
   },
 
   /**
@@ -51,7 +64,7 @@ const env = createEnv({
     NEXT_PUBLIC_DEFAULT_COLOR_SCHEME: process.env.DEFAULT_COLOR_SCHEME,
     NEXT_PUBLIC_PORT: process.env.PORT,
     NEXT_PUBLIC_NODE_ENV: process.env.NODE_ENV,
-    NEXT_PUBLIC_DOCKER_ENABLED: !!process.env.DOCKER_HOST,
+    NEXT_PUBLIC_DOCKER_ENABLED: process.env.DOCKER_ENABLED,
   },
 });