unit tests: fixup, convert travis configuration to github workflow

this could still do with some more attention, e.g. test against
multiple db versions

.github/workflows/run_unit_tests.yml

@@ -0,0 +1,25 @@
+name: Go
+on: [push, pull_request]
+env:
+  GO_VERSION: 1.17
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-18.04
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: "Install Go ${{env.GO_VERSION}}"
+        uses: actions/setup-go@v2
+        with:
+          go-version: "${{env.GO_VERSION}}"
+
+      - name: Install Ginkgo CLI
+        run: |
+          go install github.com/onsi/ginkgo/ginkgo@latest
+
+      - name: Run tests
+        run: |
+          make start_docker_dbs test stop_docker_dbs

Makefile

@@ -1,7 +1,7 @@
 .PHONY: test unit integration start_docker_dbs stop_docker_dbs
 
-TEST_POSTGRES_URL ?= postgres://postgres:@localhost:5432/?sslmode=disable
-TETS_MYSQL_URL ?= root:@tcp(localhost:3306)/mysql?tls=false
+export TEST_POSTGRES_URL ?= postgres://postgres:123abc@localhost:5432/?sslmode=disable
+export TETS_MYSQL_URL ?= root:@tcp(localhost:3306)/mysql?tls=false
 
 test: unit
 
@@ -12,8 +12,13 @@ integration:
 	ginkgo -v -r ci/blackbox
 
 start_docker_dbs:
-	docker run --rm -p 5432:5432 --name postgres -e POSTGRES_PASSWORD= -d postgres:9.5
+	docker run --rm -p 5432:5432 --name postgres -e POSTGRES_PASSWORD=123abc -d postgres:12
 	docker run --rm -p 3306:3306 --name mysql -e MYSQL_ALLOW_EMPTY_PASSWORD=yes -d mysql:5.7
+	echo "Waiting for postgres to come up"
+	until docker exec postgres pg_isready; do \
+		printf "."; sleep 1;                             \
+	done
+	echo "Waiting for mysql to come up"
 	until docker exec mysql mysqladmin ping --silent; do \
 		printf "."; sleep 1;                             \
 	done