Docker is broken due to go command changes

[lthown]

` => CACHED [2/5] RUN apt update && apt install --no-install-recommends -y ca-certificates git golang 0.0s
=> ERROR [3/5] RUN go get github.com/bemasher/rtlamr 6.8s

[3/5] RUN go get github.com/bemasher/rtlamr:
6.314 # golang.org/x/xerrors
6.314 root/go/src/golang.org/x/xerrors/adaptor.go:178:33: undefined: any
6.314 root/go/src/golang.org/x/xerrors/adaptor.go:184:49: undefined: any
6.314 root/go/src/golang.org/x/xerrors/fmt.go:39:33: undefined: any
6.314 root/go/src/golang.org/x/xerrors/fmt.go:84:21: undefined: any
6.314 root/go/src/golang.org/x/xerrors/format.go:23:16: undefined: any
6.314 root/go/src/golang.org/x/xerrors/format.go:26:32: undefined: any
6.314 root/go/src/golang.org/x/xerrors/wrap.go:83:27: undefined: any

---

Dockerfile:15

13 | rtl-sdr &&
14 | rm -rf /var/lib/apt/lists/*
15 | >>> RUN go get github.com/bemasher/rtlamr
16 |
17 | # Copy files into place

ERROR: failed to build: failed to solve: process "/bin/sh -c go get github.com/bemasher/rtlamr" did not complete successfully: exit code: 2
root@docker:~/amridm2mqtt# go get github.com/bemasher/rtlamr
go: go.mod file not found in current directory or any parent directory.
'go get' is no longer supported outside a module.
To build and install a command, use 'go install' with a version,
like 'go install example.com/cmd@latest'
For more information, see https://golang.org/doc/go-get-install-deprecation
or run 'go help get' or 'go help install'.`

I also tried editing the Dockerfile to use go install github.com/bemasher/rtlamr@latest and it also failed:
> [3/5] RUN go install github.com/bemasher/rtlamr@latest: 1.023 package github.com/bemasher/rtlamr@latest: cannot use path@version syntax in GOPATH mode