Added Canvas toBlob polyfill patch

Dockerfile

@@ -54,7 +54,11 @@ RUN git clone https://github.com/taizan/PaintsChainer.git && \
 
 WORKDIR /PaintsChainer
 
-RUN git checkout $PAINTSCHAINER_COMMIT
+COPY canvas-toblob-polyfill.patch .
+
+RUN git checkout $PAINTSCHAINER_COMMIT && \
+    git apply canvas-toblob-polyfill.patch && \
+    rm canvas-toblob-polyfill.patch
 
 EXPOSE 8000
 

canvas-toblob-polyfill.patch

@@ -0,0 +1,26 @@
+From d7baf94f8e8bfd3e5f80c8cde90ccfeb038fb49c Mon Sep 17 00:00:00 2001
+From: Liam Jones <[email protected]>
+Date: Tue, 31 Jan 2017 19:37:37 +0000
+Subject: [PATCH] Added Canvas toBlob polyfill
+
+---
+ index.html | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/index.html b/index.html
+index 6654a5a..0b506be 100644
+--- a/index.html
++++ b/index.html
+@@ -6,7 +6,10 @@
+
+     <title>PaintsChainer</title>
+
+-    <!-- filestart -->
++    <!-- Canvas toBlob polyfill -->
++    <script src="https://cdnjs.cloudflare.com/ajax/libs/javascript-canvas-to-blob/3.6.0/js/canvas-to-blob.min.js"></script>
++
++    <!-- jQuery -->
+     <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
+
+     <!-- jQuery UI -->
+0