add more image information (Dockerfile/README) in UI

[larrycai]

Dockerfile & README is very important for docker image.

we need to find a way to find it out, not for all docker image, but show it out if we can

Solution 1: Find the information in Docker image

Ask docker image maintainer to keep Dockerfile/README.md inside docker image, which is a good practice for public image

ADD . /app 

Solutin 2: use external system

Like wiki system we implemented before.

Other good idea ?

[larrycai]

Yes, as we discussed in https://gitter.im/tobegit3hub/pirate , it shall use registry API.

I just think this feature looks very good, if we can find the simple solution to do this, we maybe provide it before ready of the API.

We can also know what could be useful in enterprise for the image sharing

[larrycai]

What I want now is (mostly same as dockerhub)

• who build the package ?
• is it automated build or manual upload ?
• If it is automated, I want to see the CI job, Dockerfile
• README.md for the docker image
• Stable
• popular ?
• What is last updated

Anything else, maybe this information can be put into index server

[larrycai]

So far for solution 1 is like below

 $ docker run -v /registry:/tmp/registry registry
 $ docker run -v /registry:/registry pirate

So pirate will be able to access the registry data directly (yes, ugly), then we can check 4-5 layers of easy docker image to find Dockerfile/README.md in specific path like app.

[larrycai]

So far we plan to have information from

From image layer,

• /app/PIRATE.ini for all user information, may overlap with standard registry API
• /app/README.md for README
• /app/Dockerfile for Dockerfile
• /app/BUILD.log for CI build log

They shall exist in upper layer (so far searched for 5 layers) by travelling with parent id

[larrycai]

for /app/PIRATE.ini, it will be .ini format to be easily read.

# package version is for this spec, used for upgrade when needed
PACKAGE_VERSION=0.3

# some important logs for the build and general information
README=/app/README.md
DOCKERFILE=/app/Dockerfile

# build information for reference
BUILDLOG=/app/BUILD.log
BUILDLINK=http://jenkins.example.com/jobs
BUILDURL=http://jenkins.example.com/jobs/123

# source base
SOURCEURL=http://gerrit.example.com/gblit/ABC
SOURCE_COMMIT=788271625626

# tag is the tag pushed to registry as this image created.
TAG=20150102-SNAPSHOT,LATEST,SPRINT-1

# some admin CM stuff ?
VERSION=DOKK-15001
ORGANIZATION=DOKK

What else ?

[larrycai]

try to close this issue since some important data are already there, the DOCKER.pkg file could be used in next release.

@tobegit3hub @sdd330 please try it locally and give comments.

GUI will be improved before 0.3.0 release

[larrycai]

PR #33, and it is good enough for this release, close it now.