Pass CI env vars to docker image

Author: Forest Hoffman

code-server-e2e.dockerfile

@@ -45,3 +45,7 @@ RUN echo "deb http://ftp.de.debian.org/debian buster main" >> /etc/apt/sources.l
 
 # Ensure that yarn is installed.
 RUN npm i -g yarn@1.12.3 npx
+
+# Copy CI environment variables, if they exist.
+ARG env_vars
+RUN if [ "$env_vars" != "" ]; then export $env_vars; env; fi

test/scripts/test.sh

@@ -19,6 +19,10 @@ imageID=`docker images -q code-server-e2e`
 # `--rebuild` flag is provided. Alternatively, the image can be
 # rebuilt by manually running `yarn build:docker`.
 if [[ "$imageID" == "" ]] || [[ "$1" == "--rebuild" ]]; then
-	yarn build:docker
+	if [[ "$TRAVIS_OS_NAME" != "" ]]; then
+		yarn build:docker --build-arg env_vars="$(echo $(env | grep TRAVIS | awk -F'=' '{ printf $1"="$2" " }'))"
+	else
+		yarn build:docker
+	fi
 fi
 yarn test:docker