add a Makefile (#191)

* add a Makefile

Based on advice from IRC, a makefile helps downstream packagers
understand how to build the software.

Signed-off-by: Xe Iaso <me@xeiaso.net>

* Apply review suggestions

Signed-off-by: Xe Iaso <me@xeiaso.net>

---------

Signed-off-by: Xe Iaso <me@xeiaso.net>

docs/docs/CHANGELOG.md

@@ -30,6 +30,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Disabled running integration tests on Windows hosts due to it's reliance on posix features (see [#133](https://github.com/TecharoHQ/anubis/pull/133#issuecomment-2764732309)).
 - Added support for passing the ed25519 signing key in a file with `-ed25519-private-key-hex-file` or `ED25519_PRIVATE_KEY_HEX_FILE`.
 - Fixed minor typos
+- Added a Makefile to enable comfortable workflows for downstream packagers.
 - Added `zizmor` for GitHub Actions static analysis
 - Fixed most `zizmor` findings
 - Enabled Dependabot

docs/docs/developer/building-anubis.md

@@ -22,20 +22,23 @@ In order to build a production-ready binary of Anubis, you need the following pa
 ## Install dependencies
 
 ```text
-go mod download
-npm ci
+make deps
 ```
 
+This will download Go and NPM dependencies.
+
 ## Building static assets
 
 ```text
-npm run assets
+make assets
 ```
 
+This will build all static assets (CSS, JavaScript) for distribution.
+
 ## Building Anubis to the `./var` folder
 
 ```text
-go build -o ./var/anubis ./cmd/anubis
+make build
 ```
 
 From this point it is up to you to make sure that `./var/anubis` ends up in the right place. You may want to consult the `./run` folder for useful files such as a systemd unit and `anubis.env.default` file.