add rpm/deb builds, update readme

.goreleaser.yml

@@ -74,6 +74,18 @@ dockers:
   - dockerfile: Dockerfile
     image_templates:
       - "atomicptr/crab:latest"
-      - "atomicptr/crab:{{.Tag}}"
       - "atomicptr/crab:v{{.Major}}"
-      - "atomicptr/crab:v{{.Major}}.{{.Minor}}"
+      - "atomicptr/crab:v{{.Major}}.{{.Minor}}"
+      - "atomicptr/crab:{{.Tag}}"
+## NFPM (deb and rpm)
+nfpms:
+  - package_name: crab
+    vendor: atomicptr
+    maintainer: "Christopher Kaster <me@atomicptr.de>"
+    homepage: "https://github.com/atomicptr/crab"
+    description: |
+      A versatile tool to crawl dozens of URLs from a given source, like a sitemap or an URL list.
+    license: MIT
+    formats:
+      - deb
+      - rpm

README.md

@@ -14,7 +14,18 @@ Useful for:
 
 ### Binaries
 
-[You can download the newest release from here for Linux, macOS and Windows.](https://github.com/atomicptr/crab/releases/)
+[You can download the newest release from here for Linux (including .deb and .rpm), macOS and Windows.](https://github.com/atomicptr/crab/releases/)
+
+### Docker
+
+[Docker Hub](https://hub.docker.com/r/atomicptr/crab)
+
+```bash
+$ docker pull atomicptr/crab
+# Example
+$ docker run --rm atomicptr/crab --help
+$ docker run --rm atomicptr/crab crawl:sitemap https://domain.com/sitemap.xml
+```
 
 ### Snap
 
@@ -37,14 +48,6 @@ $ scoop bucket add atomicptr https://github.com/atomicptr/scoop-bucket
 $ scoop install crab
 ```
 
-### Docker
-
-```bash
-$ docker run --rm atomicptr/crab --help
-# Example
-$ docker run --rm atomicptr/crab crawl:sitemap https://domain.com/sitemap.xml
-```
-
 ## Usage
 
 Crawl singular URLs: