diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..e0d7c17
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,26 @@
+name: Test
+
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  smoke-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      # The datacontract container runs as a non-root user and writes the JUnit
+      # report into the workspace, see README.
+      - name: Make workspace writable for datacontract container
+        run: chmod -R a+rwX "$GITHUB_WORKSPACE"
+      - name: Run action against local test contract
+        uses: ./
+        with:
+          location: tests/datacontract.yaml
+          server: production
+          junit-test-report: TEST-datacontract.xml
+      - name: Assert JUnit report was written
+        run: |
+          test -s TEST-datacontract.xml
+          grep -q 'failures="0"' TEST-datacontract.xml
+          cat TEST-datacontract.xml
diff --git a/action.yml b/action.yml
index fd5ce93..d965774 100644
--- a/action.yml
+++ b/action.yml
@@ -20,13 +20,18 @@ inputs:
 runs:
   using: 'docker'
   image: 'docker://datacontract/cli:latest'
-  entrypoint: /bin/sh
+  # The image has no shell, so the CLI is invoked directly. The runner passes empty
+  # args as literal "" (it does not drop them) and the CLI rejects an empty --publish
+  # value, so the publish option is a single `--publish=<url>` arg that degrades to
+  # `--no-logs` (the CLI's default behavior anyway) when the input is unset.
+  entrypoint: datacontract
   args:
-    - -c
-    - >-
-      datacontract test
-      --server '${{ inputs.server }}'
-      --output-format junit
-      --output '${{ inputs.junit-test-report }}'
-      ${{ inputs.publish != '' && format('--publish ''{0}''', inputs.publish) || '' }}
-      '${{ inputs.location }}'
+    - test
+    - --server
+    - ${{ inputs.server }}
+    - --output-format
+    - junit
+    - --output
+    - ${{ inputs.junit-test-report }}
+    - ${{ inputs.publish != '' && format('--publish={0}', inputs.publish) || '--no-logs' }}
+    - ${{ inputs.location }}
diff --git a/tests/data/orders.csv b/tests/data/orders.csv
new file mode 100644
index 0000000..4b8d5be
--- /dev/null
+++ b/tests/data/orders.csv
@@ -0,0 +1,4 @@
+order_id,amount
+1,10.50
+2,20.00
+3,7.25
diff --git a/tests/datacontract.yaml b/tests/datacontract.yaml
new file mode 100644
index 0000000..ab91bdd
--- /dev/null
+++ b/tests/datacontract.yaml
@@ -0,0 +1,20 @@
+dataContractSpecification: 1.1.0
+id: datacontract-action-smoke-test
+info:
+  title: Smoke test contract for the GitHub Action
+  version: 1.0.0
+servers:
+  production:
+    type: local
+    path: tests/data/orders.csv
+    format: csv
+models:
+  orders:
+    type: table
+    fields:
+      order_id:
+        type: string
+        required: true
+        unique: true
+      amount:
+        type: decimal