Docker build not working EOF at step 0

I’ve managed to create two broken builds. They simply stop at step 0 with EOF. I broke it once with centos:6 and again with centos:latest. I can still build off other images

[kevin@kev-test mariadb_centos]$ docker build --no-cache .
Sending build context to Docker daemon 5.632 kB
Sending build context to Docker daemon
Step 0 : FROM centos:latest
INFO[0000] EOF

Dockerfile is simply this as I’m just starting:

FROM centos:latest
COPY mariadb.repo /etc/yum.repos.d
RUN yum install mariadb-server
VOLUME /var/lib/mysql
EXPOSE 3306
CMD [“bash”]