Automate Your Home Using Go

Containerizing and Deploying the App

Let’s deploy the application on the Raspberry Pi as a container. First, create a container image for this application by writing a Dockerfile using the multi-stage approach you used in ​Containing and Deploying the Exporter​:

lightingweather/Dockerfile

FROM docker.io/golang:1.22 AS builder
RUN mkdir /app
WORKDIR /app
COPY . /app
RUN CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build \
      -ldflags="-s -w" \
      -o lightweather \
      lightingweather.go config.go

FROM docker.io/alpine:latest
RUN mkdir /app && adduser -h /app -D lightweather
WORKDIR /app
COPY --chown=lightweather --from=builder /app/lightweather .
EXPOSE 3040
ENTRYPOINT ["/app/lightweather"]

The content of this Dockerfile is almost the same ...