docs: add nexus example

closes #1549

Signed-off-by: Carlos Alexandro Becker <caarlos0@gmail.com>

www/docs/customization/publishers.md

@@ -108,3 +108,24 @@ which may require non-trivial authentication or has otherwise complex requiremen
 
 !!! tip
     Learn more about the [name template engine](/customization/templates).
+
+## Examples
+
+### Publish to Nexus
+
+Example of a `publishers` section pushing files to a Nexus instance:
+
+```yaml
+publishers:
+- name: nexus
+  cmd: >-
+    curl -k -u "{{ .Env.NEXUS_USERNAME }}:{{ .Env.NEXUS_PASSWORD }}"
+    -X POST
+    -H "Accept: application/json"
+    -H "Content-Type: multipart/form-data"
+    "https://nexuspro.somehost.com/service/rest/v1/components?repository=go-raw-autopub"
+    -F "raw.directory={{ tolower .Env.PROJECT_KEY }}/{{ tolower .ProjectName }}/{{ .Version }}"
+    -F "raw.asset1=@{{ .ArtifactName }};type=application/gzip"
+    -F "raw.asset1.filename={{ .ArtifactName }}"
+  dir: "{{ dir .ArtifactPath }}"
+```