Add spaces back in column names: LCMS file formatting

[carynwillis]

Description

After the last update, I realized read.xlsx removed spaces in column names. This PR keeps the spaces.

Dockerfile Structure and Organization:

• Does the Dockerfile build?
• Is tool organized according to Repository Structure?
• Specific base image with a version tag, e.g., FROM ubuntu:24.04 instead of FROM ubuntu.
• Add comments to describe each Dockerfile step.

Metadata

Include the following LABELs:

• LABEL maintainer="Your Name <your.email@rti.org>"
• LABEL base-image="ubuntu:24.04"
• LABEL description="Short description of the purpose of this image"
• LABEL software-website="https://example.com"
• LABEL software-version="1.0.0"
• LABEL license="https://www.example.com/legal/end-user-software-license-agreement"

File and Resource Management:

• Store scripts, files, and software tools ONLY in /opt.
• Removing tar files after extraction and delete temporary files and caches generated during the build process.
• Ensure sensitive data (e.g., API keys, passwords) is not hardcoded in the Dockerfile.

Container Behavior

• Specify a meaningful CMD to define how the container should run by default (help message is a good default).

[dnwillia23]

Reviewed changes and code documentation. Approved