So I am building an image from a dockerfile, using the COPY command to copy a local file from host into my container. After the image is build I run an interactive shell, and test my file which I copied and am having an error. 

Here is my shell information.

```
arcolombo@arcolombo:~/Documents/bedgraph_dockerfile$ sudo docker info
Containers: 18
Images: 72
Storage Driver: aufs
 Root Dir: /var/lib/docker/aufs
 Dirs: 108
Execution Driver: native-0.2
Kernel Version: 3.16.0-33-generic
Username: arcolombo
Registry: [https://index.docker.io/v1/]
WARNING: No swap limit support

```

Here is my docker file

```
FROM ubuntu
MAINTAINER anthonycolombo60@gmail.com
COPY software /bin

```

Note that under my directory where my Dockerfile is contained, I placed my "software" directory, which has a bedWiggle executable in the Dockerfile's context, so it does get loaded into my new container of which my image creates.

This shows the successful completion of the image

```
arcolombo@arcolombo:~/Documents/bed_dockerfile$ sudo docker build        -t="arcolombo" .
Sending build context to Docker daemon   2.7 MB
Sending build context to Docker daemon 
Step 0 : FROM ubuntu
---> d0955f21bf24
Step 1 : MAINTAINER anthonycolombo60@gmail.com
  ---> Using cache
  ---> 5el36a81f34
     Step 2 : COPY software /bin
 ---> Using cache
 ---> 1llhh2e278683ea
Successfully built 1hhfjjeea

```

Yet I get the error when I enter the container built by the above image and running my executable

root@hhhlf75hhhhfcb87ccfa:/bin# ./bedWigggle 
./bedWiggle: error while loading shared libraries: libkrb5.so.3: cannot open shared object file: No such file or directory