Add Docker support and GitHub Container Registry CI workflow (#3)

* Add comprehensive Docker support with multi-stage builds
* Set up GitHub Container Registry integration
* Enhance CI/CD workflows with Docker build and push capabilities
* Add --help and --version flags to main application
* Update documentation with Docker usage examples
* Implement security best practices for container deployment

.gitignore

@@ -1,66 +1,71 @@
-# Created by https://www.toptal.com/developers/gitignore/api/go
-# Edit at https://www.toptal.com/developers/gitignore?templates=go
-
-### Go ###
-# If you prefer the allow list template instead of the deny list, see community template:
-# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
-#
-# Binaries for programs and plugins
-*.exe
-*.exe~
-*.dll
-*.so
-*.dylib
-
-# Test binary, built with `go test -c`
-*.test
-
-# Output of the go coverage tool, specifically when used with LiteIDE
-*.out
-
-# Dependency directories (remove the comment below to include it)
-# vendor/
-
-# Go workspace file
-go.work
-
-# End of https://www.toptal.com/developers/gitignore/api/go
-
-# Shit
-.github/TODO
-
-# Local test files
-output/
-outputs/
-articulate-sample.json
-test-output.*
-go-os-arch-matrix.csv
-test_godocx.go
-test_input.json
-
-# Build artifacts
-build/
-
-# Old workflows
-.github/workflows/ci-old.yml
-.github/workflows/ci-enhanced.yml
-
-# Test coverage files
-coverage.out
-coverage.txt
-coverage.html
-coverage.*
-coverage
-*.cover
-*.coverprofile
-main_coverage
-
-# Other common exclusions
-*.exe
-*.exe~
-*.dll
-*.so
-*.dylib
-*.test
-*.out
-/tmp/
+# Created by https://www.toptal.com/developers/gitignore/api/go
+# Edit at https://www.toptal.com/developers/gitignore?templates=go
+
+### Go ###
+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# End of https://www.toptal.com/developers/gitignore/api/go
+
+# Shit
+.github/TODO
+
+# Local test files
+output/
+outputs/
+articulate-sample.json
+test-output.*
+go-os-arch-matrix.csv
+test_godocx.go
+test_input.json
+
+# Build artifacts
+build/
+
+# Old workflows
+.github/workflows/ci-old.yml
+.github/workflows/ci-enhanced.yml
+
+# Test coverage files
+coverage.out
+coverage.txt
+coverage.html
+coverage.*
+coverage
+*.cover
+*.coverprofile
+main_coverage
+
+# Other common exclusions
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+*.test
+*.out
+/tmp/
+.github/copilot-instructions.md
+
+# Editors
+.vscode/
+.idea/