The .goreleaser.yaml configuration has been updated to include Docker image signing. This is accomplished by utilizing 'docker_signs' and specifying 'artifacts: all', allowing to process and authenticate all output Docker images. The user's password for the Docker registry is taken from the environment variable 'COSIGN_PWD'.
Extended the .goreleaser.yaml configuration with build_flag_templates options for the Docker image. These new flags introduce image labels for open containers, which provides more detailed image information including the creation date, project name, revision, and version.
Added four Docker image templates in the .goreleaser.yaml file. The newly introduced templates specify the image tags based on the version, making it easier to handle different versions of the Docker image for the "apg-go" project.
The Docker image creation and pushing procedures have been moved from the goreleaser.yaml file to a separate GitHub Workflow file docker.yml. This shift gives a more granular control over the Docker image build and push operations with specific GitHub Actions. Also, added the Dockerfile instructions and docker-files for image building to cope up with the changed Docker process.
A new Docker image template has been added to the .goreleaser.yaml file. Specifically, the image template 'wneessen/apg-go' was introduced under the 'dockers' configuration, allowing smoother configuration for Docker-based implementations.
This commit introduces the .gitignore configuration file and adds SPDX headers to several files including test and documentation files. The headers provide license information in a standardized format which can be easily picked up by automated tools for license compliance checks. Additionally, it deleted a .idea/.gitignore file, which is a project specific IDE configuration file not necessary for the repository. It also introduced a README.md file providing more insightful information about the project.
