Use Go 1.17.

.drone.yml

@@ -7,11 +7,11 @@ clone:
 
 steps:
   - name: build
-    image: golang:1.16
+    image: golang:1.17
     commands:
       - go test -v ./...
 
   - name: lint
-    image: golangci/golangci-lint:v1.27.0
+    image: golangci/golangci-lint:v1.42.0
     commands:
       - golangci-lint run -v

.golangci.yml

@@ -1,39 +1,15 @@
 run:
   timeout: 1m
 linters:
-  disable-all: true
-  enable:
-    - bodyclose
-    - deadcode
-    - depguard
-    - dogsled
-    - dupl
-    - errcheck
-    - funlen
-    - gochecknoinits
-    - goconst
-    - gocognit
-    - gocritic
-    - gocyclo
-    - gofmt
-    - goimports
-    - golint
-    - gosec
-    - gosimple
-    - govet
-    - ineffassign
-    - interfacer
-    - lll
-    - maligned
-    - misspell
-    - nakedret
-    - prealloc
-    - staticcheck
-    - structcheck
-    - stylecheck
-    - typecheck
-    - unconvert
-    - unparam
-    - unused
-    - varcheck
-    - whitespace
+  enable-all: true
+  disable:
+    - testpackage
+    - paralleltest
+    - gomnd
+    - gochecknoglobals
+    - nlreturn
+    - exhaustivestruct
+    - scopelint
+    - wsl
+    - gci
+    - gofumpt

go.mod

@@ -1,5 +1,11 @@
 module github.com/jbub/banking
 
-go 1.16
+go 1.17
 
 require github.com/stretchr/testify v1.7.0
+
+require (
+	github.com/davecgh/go-spew v1.1.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
+)