failed to initialize build cache at /.cache/go-build: mkdir /.cache: permission denied

[liskicious]

I tried to follow docs, but I get an error with the .cache folder. It seems to use /.cache and not ./.cache ?

➜  server mkdir -p ./.cache/pkg;

➜  server docker run -it \
  -u $(id -u) \           
  -v "$(pwd):/go/src/app" \
  -v "$(pwd)/.cache/pkg:/go/pkg" \
  -w /go/src/app \
  zephinzer/godev:latest \
  godev init
/go/src/app 
Nov02/16:46| [main] godev has started
odev> initialise git repository at '/go/src/app'? [y/N]: y
odev> sure thing
Initialized empty Git repository in /go/src/app/.git/
odev> seed a .gitignore? [y/N]: y
odev> sure thing
odev> seed a go.mod? [y/N]: y
odev> sure thing
odev> seed a main.go? [y/N]: y
odev> sure thing
odev> seed a Dockerfile? [y/N]: y
odev> sure thing
odev> seed a .dockerignore? [y/N]: y
odev> sure thing
odev> seed a Makefile? [y/N]: y
odev> sure thing
Nov02/16:46| [main] godev has ended
➜  server git:(master) ✗ docker run -it \
  -u $(id -u) \
  -v "$(pwd):/go/src/app" \
  -v "$(pwd)/.cache/pkg:/go/pkg" \
  -w /go/src/app \
  zephinzer/godev:latest \
  godev     
Nov02/16:46| [main] godev has started
Nov02/16:46| [main] working dir : '/go/src/app'
Nov02/16:46| [main] watching dir: '/go/src/app'
Nov02/16:46| [command/go] 'mod', 'vendor'
► ─────────────────────────────────────────── pid:12 id:20bcdb ►
go: modules disabled inside GOPATH/src by GO111MODULE=auto; see 'go help modules'
Nov02/16:46| [command/go] 
■ ─────────────────────────────────────────── pid:12 id:20bcdb ■
Nov02/16:46| [run/1/1/3]] command[20bcdb] exited with: exit status 1
Nov02/16:46| [command/go] 'build', '-o', '/go/src/app/bin/app'
► ─────────────────────────────────────────── pid:21 id:c6be74 ►
failed to initialize build cache at /.cache/go-build: mkdir /.cache: permission denied
Nov02/16:46| [command/go] 
■ ─────────────────────────────────────────── pid:21 id:c6be74 ■
Nov02/16:46| [run/1/2/3]] command[c6be74] exited with: exit status 1
Nov02/16:46| [run/1/3/3]] application at '/go/src/app/bin/app' could not be found