How to add flags to golang build in dockerfile - node.js

Question

I am currently running a node server with a golang submodule in docker.
To run the golang module, I run the command
go run cmd/downloader/main.go -build 1621568 -outdir /src/results
I have been unable to figure out how to add these flags to the golang build in my dockerfile. Here is my current dockerfile.
FROM golang:1.17 AS downloader
WORKDIR /app
COPY component-review-handler/ ./
RUN go build -o downloader ./cmd/downloader
FROM node:14
# vvv add this line
COPY --from=downloader /app/downloader /usr/local/bin/
# same as before
WORKDIR /usr/src/app
COPY package*.json ./
RUN npm install
COPY . .
ENV NODE_TLS_REJECT_UNAUTHORIZED='0'
EXPOSE 3000
CMD ["node", "server.js"]
In the node service, I execute the golang binary by running
exec(
`downloader`,
(error, stdout, stderr) => {
if (error) {
logger.error(`error: ${error.message}`)
return
}
if (stderr) {
logger.log(`stderr: ${stderr}`)
return
}
logger.log(`stdout: ${stdout}`)
}
)
The issue is I need to add flags to my downloader command. Does anyone know how I can add this flag when I dynamically run the binary in the node server?
-build 1621568 -outdir /src/results

Answer 1

Try execFile instead
execFile('downloader', ['-build', '1621568', '-outdir', '/src/results'], (error, stdout, stderr) => {
if (error) {
logger.error(`error: ${error.message}`)
return
}
if (stderr) {
logger.log(`stderr: ${stderr}`)
return
}
logger.log(`stdout: ${stdout}`)
}
)