circleciでphpunit実行したい

laradock環境でcircleciにてphpunitを実行したいのですが、詰まっています。

composer require phpunit/phpunit 実行 ->Nothing to install or updateとなりインストールされない
vendor/bin/phpunit 実行　->No such file or directory エラー

ディレクトリ構成
・.circleci
・laradock
・myProject

皆様のお力をお借りしたいです。どうぞよろしくお願いいたします

.circleci/config.yml

version: 2
jobs:
  build:
    docker:
      - image: circleci/php:7.2-node-browsers
      - image: circleci/mysql:8.0.18
    environment:
      - DB_CONNECTION: testing

    steps:
      - checkout
      - setup_remote_docker
      - run: sudo apt-get update

      - run:
          name: composer
          command: |
            cd laradock && \
            sudo docker-compose exec workspace composer require --dev phpunit/phpunit ^7.0

      - run:
          name: UnitTest
          command: cd myProject && vendor/bin/phpunit

実行結果

HironorisMacBook-Pro:phpP_work hironori$ circleci build .circleci/config.yml
Docker image digest: sha256:c4143f9042c7d5aee8ee03bd5ce1d414e9a4bbacfc89742c4b5410e170858106
====>> Spin Up Environment
Build-agent version  ()
Docker Engine Version: 19.03.1
Kernel Version: Linux 48c2e1c064d0 4.9.184-linuxkit #1 SMP Tue Jul 2 22:58:16 UTC 2019 x86_64 Linux
Starting container circleci/php:7.2-node-browsers
  image is cached as circleci/php:7.2-node-browsers, but refreshing...
7.2-node-browsers: Pulling from circleci/php
Digest: sha256:789b0277d9ab4774e0032b31cfa4ee9126e9b26149a135b1c5b7454d8dc06da2
Status: Image is up to date for circleci/php:7.2-node-browsers
  using image circleci/php@sha256:789b0277d9ab4774e0032b31cfa4ee9126e9b26149a135b1c5b7454d8dc06da2
Starting container circleci/mysql:8.0.18
  image is cached as circleci/mysql:8.0.18, but refreshing...
8.0.18: Pulling from circleci/mysql
Digest: sha256:385f12ad8c8b229c37f80331794e969e72696918615ed1280a9aaac3a602f269
Status: Image is up to date for circleci/mysql:8.0.18
  using image circleci/mysql@sha256:385f12ad8c8b229c37f80331794e969e72696918615ed1280a9aaac3a602f269
====>> Container circleci/mysql:8.0.18
====>> Preparing Environment Variables
Using build environment variables:
  BASH_ENV=/tmp/.bash_env-localbuild-1583535663
  CI=true
  CIRCLECI=true
  CIRCLE_BRANCH=develop
  CIRCLE_BUILD_NUM=
  CIRCLE_JOB=build
  CIRCLE_NODE_INDEX=0
  CIRCLE_NODE_TOTAL=1
  CIRCLE_REPOSITORY_URL=git@github.com:hironori11an/phpP_work.git
  CIRCLE_SHA1=17b27e8ced6df8fa519a42c2d59f24cd616a7d32
  CIRCLE_SHELL_ENV=/tmp/.bash_env-localbuild-1583535663
  CIRCLE_WORKING_DIRECTORY=~/project


The redacted variables listed above will be masked in run step output.====>> Checkout code
  #!/bin/bash -eo pipefail
mkdir -p /home/circleci/project && cd /tmp/_circleci_local_build_repo && git ls-files | tar -T - -c | tar -x -C /home/circleci/project && cp -a /tmp/_circleci_local_build_repo/.git /home/circleci/project
====>> Setup a remote Docker engine
Using local docker engine bind-mounted
====>> sudo apt-get update
  #!/bin/bash -eo pipefail
sudo apt-get update
Hit:1 http://security.debian.org/debian-security buster/updates InRelease
Hit:2 http://deb.debian.org/debian buster InRelease
Get:3 http://deb.debian.org/debian buster-updates InRelease [49.3 kB]
Fetched 49.3 kB in 0s (100 kB/s)
Reading package lists... Done
====>> composer
  #!/bin/bash -eo pipefail
cd laradock && \
sudo docker-compose exec workspace composer require --dev phpunit/phpunit ^7.0

^@^@Do not run Composer as root/super user! See https://getcomposer.org/root for details
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Package zendframework/zend-diactoros is abandoned, you should avoid using it. Use laminas/laminas-diactoros instead.
Writing lock file
Generating optimized autoload files
Carbon 1 is deprecated, see how to migrate to Carbon 2.
https://carbon.nesbot.com/docs/#api-carbon-2
    You can run './vendor/bin/upgrade-carbon' to get help in updating carbon and other frameworks and libraries that depend on it.
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover --ansi
Discovered Package: beyondcode/laravel-dump-server
Discovered Package: fideloper/proxy
Discovered Package: laravel/nexmo-notification-channel
Discovered Package: laravel/slack-notification-channel
Discovered Package: laravel/tinker
Discovered Package: nesbot/carbon
Discovered Package: nunomaduro/collision
Package manifest generated successfully.
====>> UnitTest
  #!/bin/bash -eo pipefail
cd myProject && vendor/bin/phpunit
/bin/bash: vendor/bin/phpunit: No such file or directory
Error: 
Exited with code exit status 127

Step failed
Error: runner failed (exited with 101)
Task failed
Step canceled
Error: task failed
HironorisMacBook-Pro:phpP_work hironori$