Changes root-directory name of YAML_FILE - path to uppercase automatically, which leads to YAML_FILE_ERROR: no such file or directory

I run the AWS-CodeBuild locally with the following command in the root-directory of the related project "_projectname_":

```
username@hd1pcms0347 MINGW64 ~/Projects/projectname (dev-platform-al)
$ ../aws-codebuild-docker-images/local_builds/codebuild_build.sh -i aws/codebuild/standard:5.0 -a artifacts-output-projectname -s . -b src/build/buildspec.tests.pre-deploy.yml -c /c/Users/username/.aws/config
```

The output **Build Command** in the CLI is:

```
docker run -it -v //var/run/docker.sock:/var/run/docker.sock -e "IMAGE_NAME=aws/codebuild/standard:5.0" -e "ARTIFACTS=//Artifacts-output-projectname" -e "SOURCE=//C/Users/username/Projects/projectname/." -e "BUILDSPEC=//Src/build/buildspec.tests.pre-deploy.yml" -e "AWS_CONFIGURATION=//C/Users/username/.aws" -e "INITIATOR=username" amazon/aws-codebuild-local:latest

Removing agent-resources_build_1 ... done
Removing agent-resources_agent_1 ... done
Removing network agent-resources_default
Removing volume agent-resources_source_volume
Removing volume agent-resources_user_volume
Creating network "agent-resources_default" with the default driver
Creating volume "agent-resources_source_volume" with local driver
Creating volume "agent-resources_user_volume" with local driver
Creating agent-resources_agent_1 ... done
Creating agent-resources_build_1 ... done
Attaching to agent-resources_agent_1, agent-resources_build_1
agent_1 | [Container] 2021/07/05 11:58:43 Waiting for agent ping
agent_1 | [Container] 2021/07/05 11:58:45 Waiting for DOWNLOAD_SOURCE
agent_1 | [Container] 2021/07/05 11:58:46 Phase is DOWNLOAD_SOURCE
agent_1 | [Container] 2021/07/05 11:58:46 CODEBUILD_SRC_DIR=/codebuild/output/src055514407/src
agent_1 | [Container] 2021/07/05 11:58:46 Phase complete: DOWNLOAD_SOURCE State: FAILED
agent_1 | [Container] 2021/07/05 11:58:46 Phase context status code: YAML_FILE_ERROR Message: stat /Src/build/buildspec.tests.pre-deploy.yml: no such file or directory
agent_1 | [Container] 2021/07/05 11:58:46 Runtime error (*clienterr.PhaseContextError: stat /Src/build/buildspec.tests.pre-deploy.yml: no such file or directory)
agent-resources_agent_1 exited with code 0
Aborting on container exit...
```

**Error:** `/Src/build/buildspec.tests.pre-deploy.yml:` **no such file or directory**

The actual root-directory starts with a lower case like so:
`src\build\buildspec.tests.pre-deploy.yml`

Now this begs the question **why** the software would change the first letter **from lowercase to uppercase?**

Next, what does the following state stand for:
`DOWNLOAD_SOURCE State: FAILED`

Is it related to the previous ill-renaming of the root-directory `/scr/`?