add lint

.drone.yml

@@ -1,69 +1,19 @@
 kind: pipeline
 type: docker
-name: default
+name: backend
 
 steps:
-  - name: format
-    image: golang:1.26
+  - name: check
+    image: golang:1.27.0-bookworm
+    environment:
+      TEST_DATABASE_URL: postgres://postgres:postgres@postgres:5432/postgres?sslmode=disable
     commands:
-      - test -z "$(gofmt -l .)"
+      - go version
+      - go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.14.0
+      - make check
 
-  - name: test
-    image: golang:1.26
-    commands:
-      - go test ./...
-
-  - name: build
-    image: golang:1.26
-    commands:
-      - GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -a -ldflags '-extldflags "-static"' -o evening_detective_server ./cmd/evening_detective_server
-
-  - name: scp
-    image: appleboy/drone-scp
-    settings:
-      host:
-        from_secret: server_ip
-      username:
-        from_secret: ssh_user
-      key:
-        from_secret: ssh_key
-      port:
-        from_secret: ssh_port
-      target:
-        - deploys/evening_detective_server
-      source:
-        - evening_detective_server
-        - docker-compose.yml
-        - Dockerfile
-      rm: true
-    when:
-      branch:
-        - master
-      event:
-        - push
-
-  - name: deploy
-    image: appleboy/drone-ssh
-    settings:
-      host:
-        from_secret: server_ip
-      username:
-        from_secret: ssh_user
-      key:
-        from_secret: ssh_key
-      port:
-        from_secret: ssh_port
-      command_timeout: 10s
-      script:
-        - cd deploys/evening_detective_server
-        - docker-compose up -d --force-recreate
-    when:
-      branch:
-        - master
-      event:
-        - push
-
-trigger:
-  event:
-    - push
-    - pull_request
+services:
+  - name: postgres
+    image: postgres:18
+    environment:
+      POSTGRES_PASSWORD: postgres

.golangci-version

@@ -0,0 +1 @@
+v2.14.0

.golangci.yml

@@ -0,0 +1,16 @@
+version: "2"
+
+linters:
+  default: none
+  enable:
+    - errcheck
+    - ineffassign
+    - revive
+    - staticcheck
+    - unused
+  exclusions:
+    generated: strict
+
+run:
+  relative-path-mode: gomod
+  timeout: 5m

Makefile

@@ -4,7 +4,22 @@ DEV_USER_USERNAME ?= dev
 DEV_USER_EMAIL ?= dev@example.com
 DEV_USER_PASSWORD ?= dev123456
 
-.PHONY: dev-user migrate-up
+.PHONY: dev-user migrate-up fmt-check vet lint check
+
+fmt-check:
+	@set -e; files=$$(git ls-files -z '*.go' ':!proto/*.pb.go' | xargs -0 -r gofmt -l); if [ -n "$$files" ]; then printf '%s\n' "$$files"; exit 1; fi
+
+vet:
+	go vet ./...
+
+lint:
+	golangci-lint run ./...
+
+check:
+	$(MAKE) fmt-check
+	$(MAKE) vet
+	$(MAKE) lint
+	$(MAKE) test
 
 migrate-up:
 	goose -dir ./migrations postgres "$(DATABASE_URL)" up