Use statusim docker image

.travis.yml

@@ -1,20 +1,8 @@
-sudo: false
+sudo: required
-language: c
+services:
-os:
+  - docker
-  - linux
+before_install:
-  # - osx
+  - docker pull statusteam/nim-base
-dist: trusty
-before_script:
-  - git clone https://github.com/nim-lang/Nim.git
-  - cd Nim
-  - git clone --depth 1 https://github.com/nim-lang/csources
-  - cd csources && sh build.sh
-  - cd ..
-  - bin/nim c koch
-  - ./koch boot -d:release
-  - ./koch nimble
-  - export PATH=$(pwd)/bin:$PATH
-  - cd ..
 script:
-  - nimble install -y
+  - docker run statusteam/nim-base nim --version
-  - nimble test
+  - docker run -v "$(pwd):/project" -w /project statusteam/nim-base sh -c "nimble install -dy && nimble test"