Docker build failing

I have tried to build the Docker image locally both using Dockerfile and Dockerfile.DS but it seems to fail.

The build of gophernotes is failing on the go build command.
I tried changing the go interpreter to a previous version but got this:
```bash
go: downloading golang.org/x/tools v0.0.0-20200522201501-cb1345f3a375
go: downloading github.com/mattn/go-runewidth v0.0.9
# github.com/cosmos72/gomacro/xreflect
/go/pkg/mod/github.com/cosmos72/gomacro@v0.0.0-20200607151955-647446f8352c/xreflect/value.go:214:16: v.fwd().IsZero undefined (type reflect.Value has no field or method IsZero)
```

without changing anything the error I am getting is this:
```bash
/usr/lib/go/src/internal/reflectlite/value.go:8:2: found packages runtime (alg.go) and trace (annotation.go) in /usr/lib/go/src/runtime
package github.com/gopherdata/gophernotes
imports github.com/cosmos72/gomacro/ast2
imports github.com/cosmos72/gomacro/go/etoken
imports github.com/cosmos72/gomacro/imports
imports plugin
imports runtime/cgo: no Go files in /usr/lib/go/src/runtime/cgo
/go/pkg/mod/github.com/cosmos72/gomacro@v0.0.0-20200607151955-647446f8352c/imports/runtime_debug.go:8:2: no Go files in /usr/lib/go/src/runtime/debug
/go/pkg/mod/github.com/cosmos72/gomacro@v0.0.0-20200607151955-647446f8352c/imports/go1_11/runtime_trace.go:10:2: no Go files in /usr/lib/go/src/runtime/trace
/usr/lib/go/src/crypto/x509/x509.go:37:2: found packages asn1 (asn1.go) and cryptobyte (builder.go) in /usr/lib/go/src/vendor/golang.org/x/crypto/cryptobyte
/usr/lib/go/src/crypto/x509/x509.go:38:2: no Go files in /usr/lib/go/src/vendor/golang.org/x/crypto/cryptobyte/asn1
```

Tried building the image using docker on OSX and ubuntu.