Remove test container

Also take a look at 'Reset repo' below

docker stop gitsecret
docker container rm gitsecret
docker image rm gitsecret-test

Install test container

docker build -t gitsecret-test .
docker run -it --name gitsecret -d gitsecret-test:latest
docker exec -it gitsecret bash

# Install git-secret on docker host
wget https://bintray.com/sobolevn/rpm/rpm -O bintray-sobolevn-rpm.repo
mv bintray-sobolevn-rpm.repo /etc/yum.repos.d/
yum install git-secret

Clone repo and define gpg user. From docker host:

git clone https://github.com/trygvea/git-secret-test.git
cd git-secret-test

# define gpg user on docker host
gpg --batch --gen-key docker-test-images/gpg-create-user.txt
gpg --export -a gitsecret-test@foo.com > PUBLIC-KEY.txt

Test

# Check that we have no access on docker host:
cat secret.txt	# should not exist
git secret reveal   # should giva an error

# give test user access to secret. From local host run:
gpg --import PUBLIC-KEY.txt		          # copy generated key from docker host
git secret tell gitsecret-test@foo.com    # give access. You may be asked for passphrase here
git secret hide -d  # NOTE: This steps seems unneccessary, but are essential 
git secret reveal   # NOTE: This steps seems unneccessary, but are (probably) essential
git add .
git commit -m "Revealing secret to test user. NOTE: remove this commit for repeated testing and `git push -f`"
git push

# Test if we can reveal secret now, on docker host:
git pull
git secret tell gitsecret-test@foo.com    # must also give ourselves access here, weird
git secret reveal
cat secret.txt    # Now we should see the secret text!

Reset repo

For repeated testing, the commit revealing the secret should be removed.

git log		# Make sure the "Reveal secret..." commit is the last commit
git reset --hard HEAD~
git push -f