An alternative base Docker image (with CentOS7 and Fedora 24 versions), targeted particularly for people who are statically compiling native code (Go, Rust) or minimal C/C++ servers (nginx, redis) that don't tend to have big dependencies and don't need translation infrastructure, etc.
There are only two packages to start:
micro-yuminst and the
$distro-release package for /etc/yum.repos.d/ definitions -
everything else comes via dependencies.
See our CentOS CI jobs:
Currently, uploads to the Docker Hub are manual, under the tags
cgwalters/fedoramin and cgwalters/centosmin. You can also download the
tarballs directly from the Jenkins Jobs via:
curl https://ci.centos.org/job/atomic-dockerimage-fedora-24/lastSuccessfulBuild/artifact/fedoramin-24.tar.gz | docker import - cgwalters/fedoramin:24
curl https://ci.centos.org/job/atomic-dockerimage-centos-7/lastSuccessfulBuild/artifact/centosmin-7.tar.gz | docker import - cgwalters/centosmin:7
Right now we're at ~27MB compressed, ~77MB uncompressed.
yum -y install httpd should not pull in systemd by default. This
would likely require work in libsolv.
Build libcurl without libssh, ldap, etc. (EASY)
https://bugzilla.redhat.com/show_bug.cgi?id=1360404
https://bugzilla.redhat.com/show_bug.cgi?id=1361869
So we can drop nss. I noticed at least OpenSUSE at least avoids the glibc ➡️ nss dependency.
glib2 -> shared-mime-info
./build-via-docker-and-yum.sh centos 7./build-via-docker-and-yum.sh fedora 24
I think the win overall versus the current base image would become
significantly clearer if it was "rebased" and just became a layer on
top of this. Implementing this would entail some slightly nontrivial
transition code where micro-yuminst knows how to replace itself with
yum for example.