When uploading an image through git to heroku, the image is corrupted when it gets sent from the web server. I've been trying to fix it by going g rm --cached images/contact-me.png and then g add images/contact-me.png again, and then pushing.
Also;
xyz@co-data:~/labs/exposeit-site$ sha1sum images/contact-me.png
2d319cd64e94afe7cdd169347653670a1dd82581 images/contact-me.png
xyz@co-data:~/labs/exposeit-site$ wget http://exposeit.herokuapp.com/images/contact-me.png
--2012-08-16 16:50:35-- http://exposeit.herokuapp.com/images/contact-me.png
Resolving exposeit.herokuapp.com (exposeit.herokuapp.com)... 50.19.121.246, 174.129.192.155, 184.73.155.93, ...
Connecting to exposeit.herokuapp.com (exposeit.herokuapp.com)|50.19.121.246|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1230115 (1.2M) [image/png]
Saving to: `contact-me.png'
100%[=================================================================================>] 1,230,115 963K/s in 1.2s
2012-08-16 16:50:36 (963 KB/s) - `contact-me.png' saved [1230115/1230115]
xyz@co-data:~/labs/exposeit-site$ sha1sum contact-me.png
74d97745d35bb67e5517611b683ed461bd0c1686 contact-me.png
and
xyz@co-data:~/labs/exposeit-site$ g ls-files | grep contact-me
images/contact-me.png
Is this a problem of Heroku's?
Update:
Procfile:
web: bundle exec thin start -R config.ru -e $RACK_ENV -p $PORT
So the answer is that the thin gem has a bug that takes string length instead of length of the byte array that is the underlying image. Why it would first be converted to a string, I don't know.
The solution is to add, to your Gemfile:
gem 'rack-jekyll', :git => 'https://github.com/adaoraul/rack-jekyll.git', :require => 'rack/jekyll'
...and it will be downloaded from github rather than RubyGems.