Unit tests works locally but does not work on Jenkins - php

Question

Been banging my head for hours now. I have just gotten started with Docker, and build systems. I have a PHP Codeception (unit testing framework) codebase as a repo example. Locally, I am able to successfully run the test, but when I check-in my code and it goes to the CI (Jenkins), the client program can be invoked but says no tests found.
*note I know that my build definitions could use some work, my goal is just to get a working build.
Dockerfile
FROM codeception/codeception
Makefile
APP_NAME=codeception
ROOT_DIR=${PWD}
WORK_DIR=app
docker_build:
docker build -t $(APP_NAME) .
run_test:
docker run --rm --name ception -w /$(WORK_DIR) -v $(ROOT_DIR):/$(WORK_DIR) $(APP_NAME) run acceptance
Just for arguments sake, this is how it prints in the build system
docker run --rm --name ception -w /app -v /var/jenkins_home/workspace/codeception:/app codeception run
Build Triggers
make docker_build
make run_test
Local Output
OK (1 test, 0 assertions)
Jenkins Output
*note did not fail, but..
no tests executed!
Jenkins Installation
Host is a Docker machine droplet on digital ocean and I ran a Jenkins container voluming Docker sock so I can invoke Docker on build triggers
ANOTHER QUESTION
Given the above preconditions with the command:
*note the pwd
docker run --rm --name ception -w /app -v /var/jenkins_home/workspace/codeception:/app codeception run; pwd
Jenkins output:
/var/jenkins_home/workspace/codeception
I was expecting it to output /app because my understanding is, it invokes pwd from inside the docker container, so this should have outputed the /app directory. I am confused now
Logs:
Started by GitHub push by edsk3o
Building in workspace /var/jenkins_home/workspace/codeception
> git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
> git config remote.origin.url https://github.com/edsk3o/codeception.git # timeout=10
Fetching upstream changes from https://github.com/edsk3o/codeception.git
> git --version # timeout=10
using GIT_ASKPASS to set credentials
> git fetch --tags --progress https://github.com/edsk3o/codeception.git +refs/heads/*:refs/remotes/origin/*
> git rev-parse refs/remotes/origin/master^{commit} # timeout=10
> git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision 1a7dd08ef1ed9e8e7b3f236c50690b65c65f37e8 (refs/remotes/origin/master)
> git config core.sparsecheckout # timeout=10
> git checkout -f 1a7dd08ef1ed9e8e7b3f236c50690b65c65f37e8
Commit message: "laksjd"
> git rev-list --no-walk 528640c7be393aaa06f94edc80f12234a759efd6 # timeout=10
[codeception] $ /bin/sh -xe /tmp/jenkins9213645655529951332.sh
+ make docker_build
docker build -t codeception .
Sending build context to Docker daemon 3.408MB
Step 1/1 : FROM codeception/codeception
---> 1681da57f253
Successfully built 1681da57f253
Successfully tagged codeception:latest
+ make run_test
docker run --rm --name ception -w /app -v /var/jenkins_home/workspace/codeception:/app codeception run acceptance; pwd
Codeception PHP Testing Framework v2.3.8
Powered by PHPUnit 6.5.6 by Sebastian Bergmann and contributors.
[1mAcceptance Tests (0) [22m---------------------------------------
------------------------------------------------------------
Time: 89 ms, Memory: 10.00MB
[30;43mNo tests executed![0m
/var/jenkins_home/workspace/codeception
Finished: SUCCESS