Fedora 28
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Docker : Use Docker-Registry2018/05/30
 
Install Docker-Registry to build Private Registry for Docker images.
[1]
This example is based on the environment that SELnux is Permissive or Disabled.
[2]
On The Host which Docker-Registry Container runs, Get SSL Certificates, refer to here.
This example is based on the case that SSL certificates are gotten under the [/etc/letsencrypt/live/dlp.srv.world] and set the [Common Name] as [dlp.srv.world].
[3] Copy to locate Certificates and pull Registry Image (v2).
Container Images are located under [/var/lib/regstry] on Registry v2 Container, so map to mount [/var/lib/docker/registry] on parent Host for Registry Container to use as Persistent Storage
[root@dlp ~]#
mkdir /etc/docker/certs.d/dlp.srv.world:5000

[root@dlp ~]#
cp -p /etc/letsencrypt/live/dlp.srv.world/cert.pem /etc/docker/certs.d/dlp.srv.world:5000/ca.crt
[root@dlp ~]#
docker pull registry:2

[root@dlp ~]#
mkdir /var/lib/docker/registry

[root@dlp ~]#
docker run -d -p 5000:5000 \
-e REGISTRY_HTTP_TLS_CERTIFICATE=/certs/fullchain.pem \
-e REGISTRY_HTTP_TLS_KEY=/certs/privkey.pem \
-v /etc/letsencrypt/live/dlp.srv.world:/certs \
-v /var/lib/docker/registry:/var/lib/registry \
registry:2
[root@dlp ~]#
docker ps 

CONTAINER ID IMAGE      COMMAND           CREATED        STATUS        PORTS                    NAMES
554520ccf02f registry:2 "/entrypoie..."   8 seconds ago  Up 6 seconds  0.0.0.0:5000->5000/tcp   quizz...
[4] If Firewalld is running, allow mapped port.
[root@dlp ~]#
firewall-cmd --add-port=5000/tcp --permanent

success
[root@dlp ~]#
firewall-cmd --reload

success
[5] For pushing local Image to Registry Container server, set like follows.
# list images on Registry container

[root@dlp ~]#
curl https://dlp.srv.world:5000/v2/_catalog

{"repositories":[]}
[root@dlp ~]#
docker images 

REPOSITORY           TAG                 IMAGE ID            CREATED             SIZE
docker.io/fedora     latest              cc510acfcd70        3 weeks ago         253 MB
docker.io/registry   2                   d1fd7d86a825        4 months ago        33.3 MB
# set a tag and push

[root@dlp ~]#
docker tag fedora dlp.srv.world:5000/fedora_reg

[root@dlp ~]#
docker push dlp.srv.world:5000/fedora_reg

The push refers to a repository [dlp.srv.world:5000/fedora_reg]
891e1e4ef82a: Pushed
latest: digest: sha256:c4cc32b09c6ae3f1353e7e33a8dda93dc41676b923d6d89afa996b421cc5aa48 size: 529
[root@dlp ~]#
docker images 

REPOSITORY                      TAG                 IMAGE ID            CREATED             SIZE
dlp.srv.world:5000/fedora_reg   latest              cc510acfcd70        3 weeks ago         253 MB
docker.io/fedora                latest              cc510acfcd70        3 weeks ago         253 MB
docker.io/registry              2                   d1fd7d86a825        4 months ago        33.3 MB
[root@dlp ~]#
curl https://dlp.srv.world:5000/v2/_catalog

{"repositories":["fedora_reg"]}
[6] For getting images from Registry Container server on a Docker node, set like follows.
# get certificates from Registry Container

[root@node01 ~]#
mkdir /etc/docker/certs.d/dlp.srv.world:5000

[root@node01 ~]#
cd /etc/docker/certs.d/dlp.srv.world:5000

[root@node01 dlp.srv.world:5000]#
scp dlp.srv.world:"/etc/docker/certs.d/dlp.srv.world:5000/ca.crt" ./
[root@node01 ~]#
docker pull dlp.srv.world:5000/fedora_reg 

Using default tag: latest
Trying to pull repository dlp.srv.world:5000/fedora_reg ...
sha256:c4cc32b09c6ae3f1353e7e33a8dda93dc41676b923d6d89afa996b421cc5aa48: 
    Pulling from dlp.srv.world:5000/fedora_reg
e71c36a80ba9: Pull complete
Digest: sha256:c4cc32b09c6ae3f1353e7e33a8dda93dc41676b923d6d89afa996b421cc5aa48
Status: Downloaded newer image for dlp.srv.world:5000/fedora_reg:latest
[root@node01 ~]#
docker images 

REPOSITORY                      TAG                 IMAGE ID            CREATED             SIZE
dlp.srv.world:5000/fedora_reg   latest              cc510acfcd70        3 weeks ago         253 MB
Matched Content