p1-logger/Dockerfile

# Use buildx for multi-architecture support
FROM --platform=${BUILDPLATFORM} golang:1.21 AS builder

WORKDIR /app

# Copy go.mod and go.sum files to download dependencies
COPY go.mod go.sum ./
RUN go mod download

# Copy the source code into the container
COPY . .

# Build the application for the specified target architecture
RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build -o mqtt-postgresql .

# Create a minimal runtime image
FROM --platform=${TARGETPLATFORM} scratch

WORKDIR /app

# Copy the executable from the builder stage
COPY --from=builder /app/p1-logger /app/p1-logger
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

# Run the application
CMD ["./p1-logger"]