- update golang to 1.7.4
- version as env variable
- change DATA_ROOT from /tendermint/data to /tendermint (it's not just
data that gets stored in DATA_ROOT; we create data folder on start; as
a result we get /tendermint/data/data, which is confusing)
- remove noninteractive env vars (do we really need these?)
- remove nodejs dep (some apps may require nodejs, but core is not one
of them; it was convenient before, but now I believe we ought to
remove it because other people who are using java do not want a
bloated container with nodejs)
- build tendermint inside a container (once again, it was convenient
before, but now I am testing kubernetes and I don't want to wait every
time TM compiles)
Otherwise:
```
panic: runtime error: index out of range
goroutine 1 [running]:
panic(0xbb8de0, 0xc82000e080)
/usr/local/go/src/runtime/panic.go:464 +0x3e6
main.main()
/go/src/github.com/tendermint/tendermint/cmd/tendermint/main.go:48 +0x811
```
For the tests its better to not use the timeout_commit, and to wait for all the
votes, because otherwise we can end up with timing dependencies in the testing
code which can lead to nondeterministic failures. That was part of the reason
for this change originally.
```
[ERROR] Unable to export dependencies to vendor directory: remove /home/vagrant/go/src/github.com/tendermint/tendermint/vendor/golang.org/x/sys/unix: directory not empty
```