Bases on another image to fix issue.

Due to bug [#66](igrigorik/node-spdyproxy#66)
we need to use another base image.

Image size: 210 MB -> 370 MB

Dockerfile

@@ -1,4 +1,11 @@
-FROM node:6-slim
+FROM debian:jessie
+
+RUN set -x \
+    # Install requirements.
+ && apt-get update \
+ && apt-get install -y curl npm \
+ && apt-get clean \
+ && rm -rf /var/lib/apt/lists/*
 
 RUN set -x \
     # Install SPDY Proxy.

entrypoint.sh

@@ -12,10 +12,10 @@ if [ -z "$*" ]
 then
     if [ -z $SPDY_USERNAME ] || [ -z $SPDY_PASSWORD ]
     then
-        exec spdyproxy --verbose --key /ssl/tls.key --cert /ssl/tls.crt
+        exec nodejs /usr/local/bin/spdyproxy --verbose --key /ssl/tls.key --cert /ssl/tls.crt
     else
-        exec spdyproxy --verbose --key /ssl/tls.key --cert /ssl/tls.crt --user $SPDY_USERNAME --pass $SPDY_PASSWORD
+        exec nodejs /usr/local/bin/spdyproxy --verbose --key /ssl/tls.key --cert /ssl/tls.crt --user $SPDY_USERNAME --pass $SPDY_PASSWORD
     fi
 else
-    exec spdyproxy "$@"
+    exec nodejs /usr/local/bin/spdyproxy "$@"
 fi