Create GH Actions workflow for build&test of Go client

.github/workflows/client.yml

@@ -0,0 +1,42 @@
+name: Go
+
+#TODO: extend the conditions once workflow gets tested together with other workflows 
+on:  
+  push:
+    branches:
+      - master
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: satackey/[email protected]
+        continue-on-error: true # ignore the failure of a step and avoid terminating the job
+      - name: Run Docker build
+        run: |
+          docker build \
+            --target gobuild \
+            --tag go-build-env .
+          docker build \
+            --tag keep-client . 
+      - name: Create and enter test results directory
+        run: |
+          mkdir -p $GITHUB_WORKSPACE/test-results/
+      - name: Run Go tests
+        run: |
+          docker run \
+            --volume $GITHUB_WORKSPACE/test-results:/mnt/test-results \
+            --workdir /go/src/github.com/keep-network/keep-core \
+            go-build-env \
+            gotestsum --junitfile /mnt/test-results/unit-tests.xml
+      - name: Publish Unit Test results
+        uses: EnricoMi/[email protected]
+        if: always() # guarantees that this action always runs, even if earlier steps fail
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          files:  ./test-results/unit-tests.xml
+          check_name: Go Test Results # name under which test results will be presented in GitHub (optional)
+          comment_on_pr: false # turns off commenting on Pull Requests