chore: add .drone.yml

.drone.yml

@@ -0,0 +1,63 @@
+---
+kind: pipeline
+type: docker
+name: test
+
+steps:
+  - name: test
+    image: golang:1.19
+    environment:
+      TESTS_DB_DSN: postgres://postgres:sessions@database:5432/sessions?sslmode=disable
+    commands:
+      - go test -race -coverprofile=coverage.txt -covermode=atomic ./...
+
+services:
+  - name: database
+    image: postgres:14.5
+    environment:
+      POSTGRES_DB: sessions
+      POSTGRES_PASSWORD: sessions
+
+trigger:
+  event:
+    - push
+    - pull_request
+  branch:
+    - master
+
+---
+kind: pipeline
+type: docker
+name: check-go-mod
+
+steps:
+  - name: check go.mod
+    image: golang:1.19
+    commands:
+      - go mod tidy
+      - git diff --exit-code go.mod
+
+trigger:
+  event:
+    - push
+    - pull_request
+  branch:
+    - master
+
+---
+kind: pipeline
+type: docker
+name: golangci-lint
+
+steps:
+  - name: run golangci-lint
+    image: golangci/golangci-lint:v1.50
+    commands:
+      - golangci-lint run
+
+trigger:
+  event:
+    - push
+    - pull_request
+  branch:
+    - master