Indeed ADD go /usr/local/ will add content of go folder and not the folder itself, you can use Thomasleveil solution or if that did not work for some reason you can change WORKDIR to /usr/local/ then add your directory to it like:
WORKDIR /usr/local/
COPY go go/
or
WORKDIR /usr/local/go
COPY go ./
But if you want to add multiple folders, it will be annoying to add them like that, the only solution for now as I see it from my current issue is using COPY . . and exclude all unwanted directories and files in .dockerignore, let's say I got folders and files:
- src
- tmp
- dist
- assets
- go
- justforfun
- node_modules
- scripts
- .dockerignore
- Dockerfile
- headache.lock
- package.json
and I want to add src assets package.json justforfun go so:
in Dockerfile:
FROM galaxy:latest
WORKDIR /usr/local/
COPY . .
in .dockerignore file:
node_modules
headache.lock
tmp
dist
Or for more fun (or you like to confuse more people make them suffer as well :P) can be:
*
!src
!assets
!go
!justforfun
!scripts
!package.json
In this way you ignore everything, but excluding what you want to be copied or added only from "ignore list".
It is a late answer but adding more ways to do the same covering even more cases.