title: docker build caused context canceled
body: <p>I found <a href="https://bitbucket.org/jason_c_kwan/orthomcl_docker/overview" rel="nofollow noreferrer">here</a> the below Dockerfile:</p>
  
  <pre><code>FROM appcontainers/mysql:debian
  MAINTAINER Jason C. Kwan "jason.kwan@wisc.edu"
  
  RUN apt-get update
  RUN apt-get install -y wget cpanminus build-essential libmysqlclient-dev python
  RUN wget http://www.micans.org/mcl/src/mcl-latest.tar.gz
  RUN tar xvf mcl-latest.tar.gz
  RUN cd mcl-* &amp;&amp; ./configure &amp;&amp; make &amp;&amp; make install
  RUN wget http://orthomcl.org/common/downloads/software/v2.0/orthomclSoftware-v2.0.9.tar.gz
  RUN tar xvf orthomclSoftware-v2.0.9.tar.gz
  RUN cpanm DBI DBD::mysql
  RUN mkdir diamond &amp;&amp; cd diamond &amp;&amp; wget http://github.com/bbuchfink/diamond/releases/download/v0.9.14/diamond-linux64.tar.gz &amp;&amp; tar xvf diamond-linux64.tar.gz
  RUN rm *.tar.gz
  
  COPY my.cnf /etc/mysql/
  COPY run_orthomcl.py /bin/
  ENV PATH="/diamond:/orthomclSoftware-v2.0.9/bin:${PATH}"
  </code></pre>
  
  <p>It failed to build the container with this command:</p>
  
  <pre><code>$ docker build -t orthomcl_docker . 
  Sending build context to Docker daemon  95.23kB
  Step 1/15 : FROM appcontainers/mysql:debian
  debian: Pulling from appcontainers/mysql
  e80d11fe101a: Pulling fs layer 
  125a38e742bc: Pulling fs layer 
  8900111cfb5b: Pulling fs layer 
  8d736c21b481: Waiting 
  3d0796a1857b: Waiting 
  158bbfe64bb1: Waiting 
  3e3a4a0e9680: Waiting 
  ed389ac8eaad: Waiting 
  8c74473c64df: Waiting 
  context canceled
  </code></pre>
  
  <p>What did I miss?</p>
  
  <p>Thank you in advance,</p>