Dockerfile.arm64

# syntax=docker/dockerfile:1

# build stage for cross-compiling for arm64 using native Go cross-compilation
FROM golang:1.24-bookworm AS builder

# install cross-compilation toolchain and ARM64 libraries
RUN dpkg --add-architecture arm64 && \
    apt-get update && apt-get install -y --no-install-recommends \
    gcc-aarch64-linux-gnu \
    libc6-dev-arm64-cross \
    libpcap-dev:arm64 \
    libnetfilter-queue-dev:arm64 \
    libusb-1.0-0-dev:arm64 \
    libbluetooth-dev:arm64 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /src

# cache go modules (runs natively on x86_64 - fast!)
RUN go env -w GOCACHE=/go-cache
RUN go env -w GOMODCACHE=/gomod-cache

COPY go.mod go.sum ./
RUN --mount=type=cache,target=/gomod-cache go mod tidy
RUN --mount=type=cache,target=/gomod-cache go mod download

# copy source code
COPY . .

# cross-compile for ARM64 using native x86_64 Go compiler
ENV CC=aarch64-linux-gnu-gcc
ENV CGO_ENABLED=1
ENV GOOS=linux
ENV GOARCH=arm64
ENV PKG_CONFIG_PATH=/usr/lib/aarch64-linux-gnu/pkgconfig

# build with cgo enabled for native library bindings
RUN --mount=type=cache,target=/gomod-cache --mount=type=cache,target=/go-cache make

# output stage - minimal image containing only the binary
FROM scratch AS output
COPY --from=builder /src/bettercap /bettercap