Add support to snap packages

Closes #351

.github/workflows/ci.yml

@@ -26,6 +26,14 @@ jobs:
       uses: actions/setup-go@v2
       with:
         go-version: '1.20'
+    - name: Install Snapcraft
+      uses: samuelmeuli/action-snapcraft@v2
+    - name: Setup Snapcraft
+      run: |
+        # https://github.com/goreleaser/goreleaser/issues/1715
+        # https://bugs.launchpad.net/snapcraft/+bug/1889741
+        mkdir -p "${HOME}/.cache/snapcraft/download"
+        mkdir -p "${HOME}/.cache/snapcraft/stage-packages"
     - id: go-cache-paths
       run: |
         echo "::set-output name=go-build::$(go env GOCACHE)"
@@ -57,3 +65,7 @@ jobs:
       run: COMMAND=./dist/kubectx_linux_amd64_v1/kubectx bats test/kubectx.bats
     - name: kubens (Go) integration tests
       run: COMMAND=./dist/kubens_linux_amd64_v1/kubens bats test/kubens.bats
+    - name: Publish Snaps to the Snap Store (edge channel)
+      run: for snap in $(ls ./dist/*.snap); do snapcraft upload --release=edge $snap; done
+      env:
+        SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.STORE_LOGIN }}

.github/workflows/release.yml

@@ -27,6 +27,12 @@ jobs:
       uses: actions/setup-go@v2
       with:
         go-version: '1.20'
+    - name: Install Snapcraft
+      uses: samuelmeuli/action-snapcraft@v1
+    - name: Setup Snapcraft
+      run: |
+        mkdir -p $HOME/.cache/snapcraft/download
+        mkdir -p $HOME/.cache/snapcraft/stage-packages
     - name: GoReleaser
       uses: goreleaser/goreleaser-action@v2
       with:
@@ -42,3 +48,7 @@ jobs:
       uses: rajatjindal/krew-release-bot@v0.0.38
       with:
         krew_template_file: .krew/ns.yaml
+    - name: Publish Snaps to the Snap Store (stable channel)
+      run: for snap in $(ls dist/*.snap); do snapcraft upload --release=stable $snap; done
+      env:
+        SNAPCRAFT_STORE_CREDENTIALS: ${{ secrets.STORE_LOGIN }}

.goreleaser.yml

@@ -98,3 +98,20 @@ release:
   extra_files:
     - glob: ./kubens
     - glob: ./kubectx
+snapcrafts:
+  - id: kubectx
+    name: kubectx
+    summary: 'kubectx + kubens: Power tools for kubectl'
+    description: |
+      kubectx is a tool to switch between contexts (clusters) on kubectl faster.
+      kubens is a tool to switch between Kubernetes namespaces (and configure them for kubectl) easily.
+    grade: stable
+    confinement: classic
+    base: core20
+    apps:
+      kubectx:
+        command: kubectx
+        completer: completion/kubectx.bash
+      kubens:
+        command: kubens
+        completer: completion/kubens.bash