DCO signing

All Prometheus repositories require DCO signing. By adding a Signed-off-by line to your commit, you sign off this Developer Certificate of Origin. You don't have to add this line manually. You can simply add a -s flag to your git commit command. If you want to automate even this flag addition, follow the instructions below. You must be fully aware that this automatically certifies the origin of all your commits by default.

• Set a hook to sign all commits.

To Set for a single repo create the hook file in: /project/root/.git/hooks/
Or set a global hook directory which will be used for all repos. git config --global core.hooksPath /path/to/gitHooks

• Than create the hook file.
  nano /path/to/gitHooks/prepare-commit-msg
  or
  nano /project/root/.git/hooks/prepare-commit-msg

#!/bin/sh

NAME=$(git config user.name)
EMAIL=$(git config user.email)

if [ -z "$NAME" ]; then
    echo "empty git config user.name"
    exit 1
fi

if [ -z "$EMAIL" ]; then
    echo "empty git config user.email"
    exit 1
fi

git interpret-trailers --if-exists doNothing --trailer \
    "Signed-off-by: $NAME <$EMAIL>" \
    --in-place "$1"