From 5f35420f786c664ca49751d7e8ced8e08080f025 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20Goc=C5=82awski?= <jakub@goclawski.net>
Date: Tue, 23 Jan 2018 15:54:38 +0100
Subject: [PATCH] Add NOT_FOUND_MEANS_INDEX option.

---
 README.md                       | 1 +
 nginx-gcs-proxy/Dockerfile      | 1 +
 nginx-gcs-proxy/nginx.conf.tmpl | 3 +++
 3 files changed, 5 insertions(+)

diff --git a/README.md b/README.md
index ee097f6..d73b558 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,7 @@ Variable | Description | Default
 --- | --- | ---
 `GCS_BUCKET_URL` | Full URL to the bucket folder. `https://storage.googleapis.com/[GCS_BUCKET_URL]/index.html` | None - required!
 `LISTEN_PORT` | Server listen port | 8080
+`NOT_FOUND_MEANS_INDEX` | When requested path is not found in the bucket, return index.html. Useful when serving single page apps, like Angular, React, Ember. Possible values: "true", "false". | false
 
 ## Health-checking
 
diff --git a/nginx-gcs-proxy/Dockerfile b/nginx-gcs-proxy/Dockerfile
index 7998ca5..f27bf60 100644
--- a/nginx-gcs-proxy/Dockerfile
+++ b/nginx-gcs-proxy/Dockerfile
@@ -11,6 +11,7 @@ COPY nginx.conf.tmpl /etc/nginx/nginx.conf.tmpl
 
 ENV GCS_BUCKET_URL " "
 ENV LISTEN_PORT "8080"
+ENV NOT_FOUND_MEANS_INDEX "false"
 
 ENTRYPOINT ["dockerize", \
             "-template", \
diff --git a/nginx-gcs-proxy/nginx.conf.tmpl b/nginx-gcs-proxy/nginx.conf.tmpl
index c7846c5..b9b2a8b 100644
--- a/nginx-gcs-proxy/nginx.conf.tmpl
+++ b/nginx-gcs-proxy/nginx.conf.tmpl
@@ -90,6 +90,9 @@ http {
             proxy_cache_valid       200 1d;
             add_header              X-Cache $upstream_cache_status;
 
+        {{ if eq .Env.NOT_FOUND_MEANS_INDEX "true" }}
+            error_page              404 =200 /index.html;
+        {{ end }}
             proxy_pass              http://google-cloud-storage/{{ .Env.GCS_BUCKET_URL }}$uri;
         }
     }