Update circle.yml to use CircleCI 2.0 (#2)

circle.yml

@@ -1,52 +1,40 @@
-machine:
-  environment:
-    GODIST: "go1.7.1.linux-amd64.tar.gz"
-    GOPATH: "$HOME/.go_workspace"
-    IMPORT_PATH: "github.com/$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME"
-    GO_PROJECT_SRC_PATH: "$GOPATH/src/$IMPORT_PATH"
-  services:
-    - docker
-  post:
-    - mkdir -p download
-    - test -e "download/$GODIST" || wget -O "download/$GODIST" "https://storage.googleapis.com/golang/$GODIST"
-    - sudo rm -rf /usr/local/go
-    - sudo tar -C /usr/local -xzf "download/$GODIST"
-
-checkout:
-  post:
-    # ensure all tags are fetched and up-to-date
-    - git tag -l | xargs git tag -d && git fetch -t
-
-dependencies:
-  override:
-    - mkdir -p "$GOPATH/src/$IMPORT_PATH"
-    - rsync -az --delete ./ "$GOPATH/src/$IMPORT_PATH/"
-    - mkdir -p "$HOME/docker"
-    - |
-      cd "$GO_PROJECT_SRC_PATH" && ./docker/docker_cache.sh "$HOME/docker" \
-      "$GO_PROJECT_SRC_PATH/docker/go-1.6" "go-1.6:latest"
-  cache_directories:
-    - ~/download
-    - ~/docker
-
-test:
-  pre:
-    - go version
-    - docker version
-  override:
-    - ? |
-        case $CIRCLE_NODE_INDEX in
-          0)
-            cd "$GO_PROJECT_SRC_PATH" && go test -v ./...
-            ;;
-          1)
-            time docker load -i "$HOME/docker/cached_image.tar.gz" && \
-            docker run -v "$GOPATH":/go go-1.6:latest \
-            /bin/sh -c 'cd ./src/github.com/nmiyake/pkg; go version; go env; go test -v ./...'
-            ;;
-          *)
-            echo "Unexpected node $CIRCLE_NODE_INDEX"
-            ;;
-        esac
-      :
-          parallel: true
+version: 2
+executorType: docker
+containerInfo:
+  - image: nmiyake/go:go-1.7.6-1.8.3-t39
+    cmd: ["/bin/bash"]
+stages:
+  build:
+    parallel: 2
+    workDir: /go/src/github.com/nmiyake/pkg
+    environment:
+      - PROJECT: pkg
+      - GET_GO_VERSION: |
+            case $CIRCLE_NODE_INDEX in
+            0)
+                echo "1.8"
+                ;;
+            1)
+                echo "1.7"
+                ;;
+            *)
+                echo "Unexpected node $CIRCLE_NODE_INDEX"
+                ;;
+            esac
+    steps:
+      - type: checkout
+      - type: shell
+        name: "Set up /usr/local/go"
+        command: |
+          set -eu
+          rm /usr/local/go
+          ln -s "/usr/local/go-$(eval "$GET_GO_VERSION")" /usr/local/go
+      - type: shell
+        name: "Verify Go version"
+        command: go version
+      - type: shell
+        name: "Install packages"
+        command: go install ./...
+      - type: shell
+        name: "Run tests"
+        command: go test ./...