chore(go): update dependencies and Go version to latest releases

- Update Go version from 1.18 to 1.21
- Upgrade `github.com/appleboy/com` from v0.1.7 to v0.2.1
- Upgrade `github.com/urfave/cli/v2` from v2.27.4 to v2.27.5
- Upgrade `github.com/cpuguy83/go-md2man/v2` from v2.0.4 to v2.0.5

Signed-off-by: appleboy <[email protected]>

ci(Woodpecker): Add env vars (#98)

chore(deps): bump actions/checkout from 3 to 4 (#84)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

ci: improve Dockerfile and linting configuration

- Add .hadolint.yaml file and ignore rule DL3018
- Update Dockerfile to remove specific package versions in apk add command

Signed-off-by: Bo-Yi Wu <[email protected]>

ci: improve release process and test robustness

- Add extra_files option to .goreleaser.yaml to include pre-existing files in the release

Signed-off-by: appleboy <[email protected]>

refactor: refactor environment variables naming convention

- Add `INPUT_*` prefix to environment variables
- Remove unused environment variables

Signed-off-by: appleboy <[email protected]>

chore(CI): update docker flow

Fix(git): Replaced -a with --author and remove false quote marks. (#66)

docs: update badge

Signed-off-by: Bo-Yi.Wu <[email protected]>

Fix loading netrc flags from environment (#56)

Co-authored-by: Bo-Yi Wu <[email protected]>