Test rare operating systems

.github/actions/setup-vm/action.yml

@@ -27,6 +27,35 @@ runs:
         prepare: pkg_add bash
         run: set -e; ${{ inputs.run }}
 
+    - uses: vmactions/netbsd-vm@v1
+      if: inputs.os == 'netbsd'
+      with:
+        copyback: false
+        usesh: true
+        run: set -e; ${{ inputs.run }}
+
+    - uses: vmactions/dragonflybsd-vm@v1
+      if: inputs.os == 'dragonflybsd'
+      with:
+        copyback: false
+        usesh: true
+        prepare: pkg install -y bash
+        run: set -e; ${{ inputs.run }}
+
+    - uses: vmactions/solaris-vm@v1
+      if: inputs.os == 'solaris'
+      with:
+        copyback: false
+        usesh: true
+        run: set -e; ${{ inputs.run }}
+
+    - uses: vmactions/omnios-vm@v1
+      if: inputs.os == 'omnios'
+      with:
+        copyback: false
+        usesh: true
+        run: set -e; ${{ inputs.run }}
+
     - run: |
         mkdir -p "$HOME/.local/bin" && tee "$HOME/.local/bin/bash" <<'EOF' && chmod a+x "$HOME/.local/bin/bash"
         #!/bin/bash --

.github/workflows/build.yml

@@ -80,6 +80,20 @@ jobs:
                 ruby=$(pkg_info -Q ruby | grep '^ruby-[0-9]' | sort -rV | head -n 1)
                 pkg_add node protobuf "$ruby"
                 pkg_info "$ruby" | grep 'ln -sf' | $SHELL
+          - os: ubuntu-latest
+            vm:
+              os: netbsd
+              run: /usr/sbin/pkg_add nodejs protobuf ruby
+          - os: ubuntu-latest
+            vm:
+              os: dragonflybsd
+              run: pkg install -y libnghttp2 libuv node npm protobuf ruby rubygem-bundler rubygem-rake
+          - os: ubuntu-latest
+            vm:
+              os: omnios
+              run: |
+                pkg install build-essential gcc13 node-22 protobuf ruby-33
+                ruby -e 'pp RbConfig::CONFIG'
 
     steps:
       - name: Checkout