correct ect -> etc

base/centos-full:7

@@ -17,7 +17,7 @@ FROM centos:7.4.1708
  RUN curl -L https://root.cern.ch/download/root_v5.34.36.Linux-centos7-x86_64-gcc4.8.tar.gz > root.tar.gz && tar xvf root.tar.gz -C /usr/local/ && rm root.tar.gz
  RUN sed -i 's/-std=c++11//g' /usr/local/root/bin/root-config
  RUN echo "source /usr/local/root/bin/thisroot.sh" >> /etc/bashrc
- RUN echo "/usr/sbin/sshd" >> /ect/bashrc
+ RUN echo "/usr/sbin/sshd" >> /etc/bashrc
  RUN /usr/bin/ssh-keygen -A
  RUN ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa -q
  RUN cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys