Add config to publish Snapcraft packages

.github/workflows/ci.yml

@@ -101,6 +101,14 @@ jobs:
         uses: sigstore/cosign-installer@9614fae9e5c5eddabb09f90a270fcb487c9f7149 # v3.3.0
         if: github.ref_type == 'tag'
 
+      - name: Setup Snapcraft
+        run: |
+          sudo apt-get update
+          sudo apt-get -yq --no-install-suggests --no-install-recommends install snapcraft
+          mkdir -p $HOME/.cache/snapcraft/download
+          mkdir -p $HOME/.cache/snapcraft/stage-packages
+        if: github.ref_type == 'tag'
+
       - name: Build binaries
         uses: goreleaser/goreleaser-action@7ec5c2b0c6cdda6e8bbb49444bc797dd33d74dd8 # v5.0.0
         with:
@@ -110,3 +118,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GOPATH: ${{ steps.go.outputs.go_path }}
           SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_COMMUNITY }}
+          SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.SNAPCRAFT_LOGIN }}

.goreleaser.yml

@@ -116,3 +116,18 @@ milestones:
 
 snapshot:
   name_template: 'edge'
+
+snapcrafts:
+  - summary: NGINX Plus Integration with Cloud Autoscaling
+    description: |
+      This package contains software that integrates NGINX Plus
+      with AWS Auto Scaling groups and Azure Virtual Machine Scale Set
+    grade: devel
+    confinement: strict
+    publish: true
+    license: 'BSD 2-Clause'
+    apps:
+      nginx-asg-sync:
+        command: nginx-asg-sync
+        plugs: ["network", "network-bind"]
+    disable: "{{ if .IsSnapshot }}true{{ end }}"

README.md

@@ -69,6 +69,8 @@ Support for other operating systems or architectures can be added.
 
 ## Installation
 
+### Manual Installation
+
 1. Get a software package for your OS:
     - For a stable release, download a package from the [releases page](https://github.com/nginxinc/nginx-asg-sync/releases).
     - For the latest source code from the main branch, build a software package by following [these
@@ -77,6 +79,14 @@ Support for other operating systems or architectures can be added.
     - For CentOS/RHEL based OSs, run: `sudo rpm -i <package-name>.rpm`
     - For Debian based OSs, run: `sudo dpkg -i <package-name>.deb`
 
+### Snap Installation
+
+You can install the NGINX Plus Integration with Cloud Autoscaling from the [Snap Store](https://snapcraft.io/nginx-asg-sync).
+
+```console
+sudo snap install nginx-asg-sync
+```
+
 ### NGINX Plus Configuration
 
 As an example, we configure NGINX Plus to load balance two groups of instances -- backend-group-one and