I created a simple application with reactjs/express. The application works as expected after deployment to Google App Engine. I'm attempting to deploy this app to Kubernetes after containerizing with Docker.
my docker file
FROM express-gateway:1.16.9
EXPOSE 8080
COPY server.js .
CMD node server.jsI have multiple files that need to be containerized by Docker, 'server.js' and 'secrets.json' file. In my docker file above I only have server.js, how do I include other files? Also inside server.js i'm using BigQuery which needs to access the additional 'secrets.json' file, how do I specify the path to this json file? In my code i specify the path as follows, will the Docker container work with the following keyFilename?
function query_bigQuery() {
const bigqueryClient = new BigQuery({
keyFilename: 'secrets.json'
});
...
You can copy all required file from the host to docker image and it will able to access other required as same as you are accessing now.
EXPOSE 8080
WORKDIR /app
COPY . .
CMD node server.jsHere copy . . will copy entire files and directories structure form the current context to /app of the docker image.
So I will suggest keeping only desired files in this context ( mean the directory where you place the dockerfile) to keep the image small.