DevPill #2: How to build and push a docker image to google cloud Artifact Registry

1. Specify Dockerfile. Example:
   

   FROM golang:1.25 AS builder
   WORKDIR /app
   COPY . .
   WORKDIR /app/services/api-gateway/cmd
   RUN CGO_ENABLED=0 GOOS=linux go build -o api-gateway
   
   FROM alpine:latest
   RUN apk --no-cache add ca-certificates
   WORKDIR /root/
   COPY --from=builder /app/services/api-gateway/cmd/api-gateway .
   CMD ["./api-gateway"]
   

2. Docker "build" to create the image locally. Example:

   docker build -t us-central1-docker.pkg.dev/<project-id>/<repository-name>/api-gateway:latest --platform linux/amd64 -f infra/production/docker/api-gateway.Dockerfile .

3. Push image to Google Cloud Artifact Registry:

   docker push us-central1-docker.pkg.dev/<project-id>/<repository-name>/api-gateway:latest

Now your image will be available to any GCP service you would like to use.