Developed the canvas_germline module for germline copy number variant calling in the nf-core/modules repository, enabling accurate CNV detection from whole genome sequencing data using Illumina Canvas. The work involved refactoring input handling to support new formats, including tuple inputs for sex and ploidy VCFs, and updating tests to ensure robust validation. Addressed continuous integration and linting issues by updating container registries, refining metadata, and applying Nextflow lint formatting. Leveraged Groovy, YAML, and containerization to improve reproducibility and maintainability. These enhancements reduced manual maintenance, expanded test coverage, and facilitated scalable deployment of germline CNV calling workflows in bioinformatics pipelines.