Tagwatch

Watches container registries for new and changed tags and creates an RSS feed for detected changes.

Configuration

Tagwatch is configured through the ./tagwatch.yml file which is read from the current working directory. Alternatively, the config can be read from the path configured in the TAGWATCH_CONF environment variable.

Installation

From Docker Hub

Checks configured tags every 12 hours and serves the generated feed on http://container.ip:8080/feed.xml

docker run -v $PWD/tagwatch.yml:/tagwatch.yml woefe/tagwatch:latest

Manually

# Clone and build tagwatch
git clone https://github.com/woefe/tagwatch
cd tagwatch
go build

# Show help
./tagwatch help

# Print the generated feed for the example config once
TAGWATCH_CONF=tagwatch.example.yml ./tagwatch run

Limitations

Every checked tag counts as a pull according to the rate limitation mechanism employed at the Docker Hub. Hence, be careful which tag patterns you watch with tagwatch. A simple .* pattern will instantly consume all pulls of the free tier in many cases!

As of now, tagwatch is only tested with the Docker Hub registry.

Licenses

Tagwatch is licensed under GPLv3+.

Tagwatch uses go-yaml/yaml.