Dockerfile.arm

# Multi-stage Docker build for ARM
FROM --platform=$BUILDPLATFORM golang:1.21-alpine AS builder

# Install build dependencies for cross-compilation
RUN apk add --no-cache git ca-certificates gcc musl-dev

# Build arguments
ARG TARGETOS
ARG TARGETARCH
ARG TARGETVARIANT

WORKDIR /app

# Copy go modules
COPY go.mod go.sum ./
RUN go mod download

# Copy source code
COPY . .

# Build both binaries for target platform
RUN CGO_ENABLED=1 GOOS=$TARGETOS GOARCH=$TARGETARCH \
    go build -a -ldflags='-w -s -extldflags "-static"' \
    -o crucible .

# Check if monitor command exists, if not copy main binary
RUN if [ -d "./cmd/crucible-monitor" ]; then \
        CGO_ENABLED=1 GOOS=$TARGETOS GOARCH=$TARGETARCH \
        go build -a -ldflags='-w -s -extldflags "-static"' \
        -o crucible-monitor ./cmd/crucible-monitor; \
    else \
        cp crucible crucible-monitor; \
    fi

# Final stage - minimal runtime
FROM scratch

# Copy CA certificates for HTTPS
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/

# Copy binaries
COPY --from=builder /app/crucible /crucible
COPY --from=builder /app/crucible-monitor /crucible-monitor

# Copy config files
COPY --from=builder /app/configs /configs

EXPOSE 9090

# Default to monitor, but can be overridden
ENTRYPOINT ["/crucible-monitor"]