use /usr/src/moby instead, and no GOPATH

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

hack/dind-systemd

@@ -95,7 +95,7 @@ After=firewalld.service
 Type=oneshot
 ExecStart=/bin/true
 RemainAfterExit=true
-ExecStop=cp /var/log/firewalld /go/src/github.com/moby/moby/v2/bundles/firewalld.log
+ExecStop=cp /var/log/firewalld /usr/src/moby/bundles/firewalld.log
 
 [Install]
 WantedBy=firewalld.service

hack/dockerfiles/generate-files.Dockerfile

@@ -17,7 +17,7 @@ RUN <<EOT
   wget -q https://github.com/protocolbuffers/protobuf/releases/download/v${PROTOC_VERSION}/protoc-${PROTOC_VERSION}-${TARGETOS}-${arch}.zip
   unzip protoc-${PROTOC_VERSION}-${TARGETOS}-${arch}.zip -d /usr/local
 EOT
-WORKDIR /go/src/github.com/moby/moby
+WORKDIR /usr/src/moby
 
 FROM base AS src
 WORKDIR /out

hack/dockerfiles/govulncheck.Dockerfile

@@ -5,7 +5,7 @@ ARG GOVULNCHECK_VERSION=v1.1.4
 ARG FORMAT=text
 
 FROM golang:${GO_VERSION}-alpine AS base
-WORKDIR /go/src/github.com/moby/moby
+WORKDIR /usr/src/moby
 RUN apk add --no-cache jq moreutils
 ARG GOVULNCHECK_VERSION
 ADD https://github.com/golang/vuln.git?ref=${GOVULNCHECK_VERSION}&keep-git-dir=1 /go/src/golang.org/x/vuln