Use "build" script for packages pre-install

refs ADMIN-761

When we added canvas-planner to the packages
directory, we set up a prebuild script to
build everything we needed for Canvas that
would run during yarn install.  This causes
canvas-planner to have to do a lot that it
doesn't need to do when we just want the npm
packages to be installed (for the sync-
translations build or for other purposes)
so we're setting a specific build step
instead

Test Plan
- Specs pass

Change-Id: I72a0dc52cd9be1255985d69921d9910ba12e9ffe
Reviewed-on: https://gerrit.instructure.com/147565
Tested-by: Jenkins
Reviewed-by: Ryan Shaw <[email protected]>
Product-Review: Mysti Sadler <[email protected]>
QA-Review: Mysti Sadler <[email protected]>

package.json

@@ -174,7 +174,7 @@
     "test:karma:watch": "karma start",
     "test:karma:watch:headless": "karma start --browsers ChromeHeadlessNoSandbox",
     "test:packages": "script/local-yarn test",
-    "preinstall": "script/local-yarn install",
+    "preinstall": "script/local-yarn install && script/local-yarn build",
     "build": "yarn run build:css && yarn run build:js",
     "build:watch": "concurrently \"yarn build:css:watch\" \"yarn build:js:watch\"",
     "build:css": "brandable_css",

packages/canvas-planner/Dockerfile

@@ -16,12 +16,15 @@ USER root
 
 RUN mkdir -p $APP_HOME
 
-COPY . $APP_HOME
+COPY package.json $APP_HOME/
+COPY yarn.lock $APP_HOME/
 
 WORKDIR $APP_HOME
 
 RUN yarn
 
+COPY . $APP_HOME
+
 # This makes the container stay running, until explicitly stopped
 # rather than being a build only image.
 CMD ["tail", "-f", "/dev/null"]

packages/canvas-planner/package.json

@@ -14,7 +14,6 @@
     "lint": "eslint src/",
     "lint:fix": "eslint src/ --fix",
     "build": "./scripts/build",
-    "prepublish": "yarn build",
     "build:dev": "NODE_ENV=development BABEL_ENV=production babel src --out-dir lib --ignore spec.js,test.js,demo.js --quiet",
     "build:lib": "BABEL_ENV=production babel src --out-dir lib --ignore spec.js,test.js,demo.js --quiet",
     "build:es": "BABEL_ENV=production ES_MODULES=1 babel src --out-dir es --ignore spec.js,test.js,demo.js --quiet",

script/local-yarn

@@ -17,7 +17,7 @@ for path in $(ls -1 {gems/{,plugins/},packages/}*/package.json 2> /dev/null); do
     NODE_ENV=production
   fi
 
-  if [[ $path != *"packages"* && ($1 == "test" || $1 == "lint") ]]; then
+  if [[ $path != *"packages"* && ($1 == "test" || $1 == "lint" || $1 == "build") ]]; then
     # yarn test and lint are packages directory specific commands
     popd > /dev/null
     continue