Use docker containers for tests and linters.

[jcvernaleo]

goclean has been replaced with run_tests.sh
which can run tests locally or in a docker image.

Closes #774

[jrick]

can you make this #!/usr/bin/env bash instead?

[jcvernaleo]

I usually do that. Not sure why I didn't do it here.

[jrick]

I'm happy with the idea of this change but can't seem to get it working on windows (WSL). The container starts up perfectly fine but then hits a glide error.

$ DOCKER_HOST=tcp://127.0.0.1:2375 ./run_tests.sh
+ GOVERSION=1.8
+ REPO=dcrwallet
+ TESTCMD='test -z "$(gometalinter -j 4 --disable-all   --enable=gofmt   --enable=gosimple   --enable=unconvert   --vendor   --deadline=10m ./... 2>&1 | egrep -v '\''testdata/'\'' | tee /dev/stderr)" &&   test -z "$(gometalinter -j 4 --disable-all   --enable=golint   --vendor   --deadline=10m ./... 2>&1 | egrep -v '\''(ALL_CAPS|OP_|NewFieldVal|RpcCommand|RpcRawCommand|RpcSend|Dns|api.pb.go|StartConsensusRpc|factory_test.go|legacy|UnstableAPI|_string.go)'\'' | tee /dev/stderr)" &&   test -z "$(gometalinter -j 4 --disable-all   --enable=vet   --vendor   --deadline=10m ./... 2>&1 | egrep -v '\''not a string in call to [A-Za-z]+f'\'' | tee /dev/stderr)" &&   env GORACE='\''halt_on_error=1'\'' go test -short -race $(glide novendor)'
+ '[' 1.8 == local ']'
+ DOCKER_IMAGE_TAG=decred-golang-builder-1.8
+ docker pull decred/decred-golang-builder-1.8
Using default tag: latest
latest: Pulling from decred/decred-golang-builder-1.8
Digest: sha256:e7cefbc0b91991c197e20515813652cf69a501ffdb534196845f0506052b40f7
Status: Image is up to date for decred/decred-golang-builder-1.8:latest
++ pwd
+ docker run --rm -it -v /mnt/c/Users/jrick/Go/src/github.com/decred/dcrwallet:/src decred/decred-golang-builder-1.8 /bin/bash -c '  rsync -ra --filter='\'':- .gitignore'\''    /src/ /go/src/github.com/decred/dcrwallet/ &&   cd github.com/decred/dcrwallet/ &&   glide install &&   go install $(glide novendor) &&   test -z "$(gometalinter -j 4 --disable-all   --enable=gofmt   --enable=gosimple   --enable=unconvert   --vendor   --deadline=10m ./... 2>&1 | egrep -v '\''testdata/'\'' | tee /dev/stderr)" &&   test -z "$(gometalinter -j 4 --disable-all   --enable=golint   --vendor   --deadline=10m ./... 2>&1 | egrep -v '\''(ALL_CAPS|OP_|NewFieldVal|RpcCommand|RpcRawCommand|RpcSend|Dns|api.pb.go|StartConsensusRpc|factory_test.go|legacy|UnstableAPI|_string.go)'\'' | tee /dev/stderr)" &&   test -z "$(gometalinter -j 4 --disable-all   --enable=vet   --vendor   --deadline=10m ./... 2>&1 | egrep -v '\''not a string in call to [A-Za-z]+f'\'' | tee /dev/stderr)" &&   env GORACE='\''halt_on_error=1'\'' go test -short -race $(glide novendor)
'
[ERROR] Failed to find glide.yaml file in directory tree: Cannot resolve parent of /

[jrick]

Related to microsoft/WSL#1854

Docker for windows doesn't understand the /mnt/c/ path being returned by pwd. A workaround is to symlink /mnt/c to /c and then execute the script from the repo path under /c.