move to ps commands

appveyor.yml

@@ -16,7 +16,7 @@ services:
 stack: node 10
 
 init:
-- ps: Install-Product node $env:nodejs_version
+- ps: Install-Product node 10
 
 install:
 - ps: choco install cloc --no-progress
@@ -24,16 +24,14 @@ install:
 - ps: $env:package_version = (Get-Content -Raw -Path package.json | ConvertFrom-Json).version
 
 before_build:
-- cmd: node --version
-- cmd: npm --version
-- cmd: set "GIT_PATH=C:\Program Files\Git\mingw64\libexec\git-core"
-- cmd: set "PATH=%GIT_PATH%;%PATH%"
+- node --version
+- npm --version
 
 build_script:
 - sh: chmod +x ./build-ci.sh
 - sh: ./build-ci.sh
-- cmd: npm install
-- cmd: npm run build:prod
+- ps: npm install
+- ps: npm run build:prod
 
 after_build:
 - sh: docker logout