diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 7bb1f4f..3a1f559 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -23,13 +23,10 @@ jobs:
         with:
           go-version: '1.25'
           check-latest: true
-      
-      - name: Install libraries for ubuntu
-        run: |
-          sudo apt install libx11-dev
 
       - name: Print environment
         run: |
+          ldconfig -p | grep X11
           which go
           go env
           make vars
@@ -40,9 +37,25 @@ jobs:
       - name: Check vet
         run: make check-vet
 
+      - name: Run tests
+        run: make test
+
       - name: Build renku-dev-utils
         run: make rdu
 
+      - name: Install libraries for ubuntu
+        run: |
+          sudo apt install libx11-dev
+
+      - name: Print environment with x11
+        run: |
+          which go
+          go env
+          make vars
+      
+      - name: Run tests with x11
+        run: make test
+
   lint:
     runs-on: ubuntu-24.04
     steps:
diff --git a/Makefile b/Makefile
index d2fa16e..0a39e87 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,18 @@ else
 VERSION := $(BRANCH).$(GIT_COMMIT_HASH)
 DIRTY := "dev"
 endif
+# X11 support
+X11 := 0
+ifeq ($(shell go env GOOS),linux)
+ifneq ($(shell ldconfig -p | grep X11 || echo ""),)
+X11 := 1
+endif
+endif
 LDFLAGS=--ldflags "-s -X github.com/SwissDataScienceCenter/renku-dev-utils/pkg/version.Version=$(VERSION) -X github.com/SwissDataScienceCenter/renku-dev-utils/pkg/version.VersionSuffix=$(DIRTY)"
+TAGS=
+ifeq ($(X11),1)
+TAGS=-tags=x11
+endif
 
 .PHONY: all
 all: help
@@ -29,6 +40,7 @@ vars:  ## Show the Makefile vars
 	@echo GIT_TAG="'$(GIT_TAG)'"
 	@echo VERSION="'$(VERSION)'"
 	@echo DIRTY="'$(DIRTY)'"
+	@echo X11="'$(X11)'"
 
 .PHONY: rdu
 rdu: build/renku-dev-utils  ## Build and install renku-dev-utils
@@ -38,7 +50,7 @@ rdu: build/renku-dev-utils  ## Build and install renku-dev-utils
 
 .PHONY: build/renku-dev-utils
 build/renku-dev-utils:
-	go build -v -o build/ $(LDFLAGS)
+	go build -v -o build/ $(TAGS) $(LDFLAGS)
 
 # From the operator sdk Makefile
 # The help target prints out all targets with their descriptions organized
@@ -73,6 +85,10 @@ check-vet:  ## Check source files with `go vet`
 lint:  ## Lint source files with `golangci-lint run`
 	golangci-lint run
 
+.PHONY: test
+test:  ## Run go tests
+	go test -v $(TAGS) ./...
+
 ##@ Code generation
 
 .PHONY: renku-users-apispec
diff --git a/pkg/clipboard/clipboard.go b/pkg/clipboard/clipboard.go
new file mode 100644
index 0000000..c47f9e8
--- /dev/null
+++ b/pkg/clipboard/clipboard.go
@@ -0,0 +1,13 @@
+//go:build !linux || x11
+
+package clipboard
+
+import "golang.design/x/clipboard"
+
+func Init() (supported bool, err error) {
+	return true, clipboard.Init()
+}
+
+func WriteStr(value string) {
+	clipboard.Write(clipboard.FmtText, []byte(value))
+}
diff --git a/pkg/clipboard/clipboard_test.go b/pkg/clipboard/clipboard_test.go
new file mode 100644
index 0000000..1ecbe35
--- /dev/null
+++ b/pkg/clipboard/clipboard_test.go
@@ -0,0 +1,15 @@
+package clipboard
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestClipboardInit(t *testing.T) {
+	supported, err := Init()
+	assert.NoError(t, err)
+	fmt.Fprintf(os.Stderr, "NOTE: clipboard supported: %t\n", supported)
+}
diff --git a/pkg/clipboard/nox11.go b/pkg/clipboard/nox11.go
new file mode 100644
index 0000000..61a79d8
--- /dev/null
+++ b/pkg/clipboard/nox11.go
@@ -0,0 +1,13 @@
+//go:build linux && !x11
+
+package clipboard
+
+import "fmt"
+
+func Init() (supported bool, err error) {
+	return false, nil
+}
+
+func WriteStr(value string) {
+	fmt.Println(value)
+}
diff --git a/pkg/cmd/copykeycloakadminpassword.go b/pkg/cmd/copykeycloakadminpassword.go
index 0297886..cedb868 100644
--- a/pkg/cmd/copykeycloakadminpassword.go
+++ b/pkg/cmd/copykeycloakadminpassword.go
@@ -5,12 +5,12 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/SwissDataScienceCenter/renku-dev-utils/pkg/clipboard"
 	"github.com/SwissDataScienceCenter/renku-dev-utils/pkg/github"
 	"github.com/SwissDataScienceCenter/renku-dev-utils/pkg/k8s"
 	ns "github.com/SwissDataScienceCenter/renku-dev-utils/pkg/namespace"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
-	"golang.design/x/clipboard"
 )
 
 var copyKeycloakAdminPasswordCmd = &cobra.Command{
@@ -61,14 +61,20 @@ func runCopyKeycloakAdminPassword(cmd *cobra.Command, args []string) {
 		os.Exit(1)
 	}
 
-	if err := clipboard.Init(); err != nil {
+	supported, err := clipboard.Init()
+	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
+	if !supported {
+		fmt.Fprintf(os.Stderr, "Warning: clipboard not supported!")
+	}
 
-	clipboard.Write(clipboard.FmtText, secretValue)
-	fmt.Printf("Copied Keycloak admin password into the clipboard")
-	fmt.Println()
+	clipboard.WriteStr(string(secretValue))
+	if supported {
+		fmt.Printf("Copied Keycloak admin password into the clipboard")
+		fmt.Println()
+	}
 }
 
 func init() {