# syntax=docker/dockerfile:labs

# 0. Prepare images
ARG PYTHON_VERSION="3.11"
ARG GO_VERSION="1.22"


# 1. Download ngrok binary (for support arm/v6)
FROM alpine AS ngrok
ARG TARGETARCH
ARG TARGETOS

ADD https://bin.equinox.io/c/bNyj1mQVY4c/ngrok-v3-stable-${TARGETOS}-${TARGETARCH}.tgz /
RUN tar -xzf /ngrok-v3-stable-${TARGETOS}-${TARGETARCH}.tgz -C /bin


# 2. Build go2rtc binary
FROM --platform=$BUILDPLATFORM golang:${GO_VERSION}-alpine AS build
ARG TARGETPLATFORM
ARG TARGETOS
ARG TARGETARCH

ENV GOOS=${TARGETOS}
ENV GOARCH=${TARGETARCH}

WORKDIR /build

RUN apk add git

# Cache dependencies
COPY go.mod go.sum ./
RUN --mount=type=cache,target=/root/.cache/go-build go mod download

COPY . .
RUN --mount=type=cache,target=/root/.cache/go-build CGO_ENABLED=0 go build -ldflags "-s -w" -trimpath


# 3. Final image
FROM python:${PYTHON_VERSION}-alpine AS base

# Install ffmpeg, tini (for signal handling),
# and other common tools for the echo source.
# alsa-plugins-pulse for ALSA support (+0MB)
# font-droid for FFmpeg drawtext filter (+2MB)
RUN apk add --no-cache tini ffmpeg bash curl jq alsa-plugins-pulse font-droid

# Hardware Acceleration for Intel CPU (+50MB)
ARG TARGETARCH

RUN if [ "${TARGETARCH}" = "amd64" ]; then apk add --no-cache libva-intel-driver intel-media-driver; fi

# Hardware: AMD and NVidia VAAPI (not sure about this)
# RUN libva-glx mesa-va-gallium
# Hardware: AMD and NVidia VDPAU (not sure about this)
# RUN libva-vdpau-driver mesa-vdpau-gallium (+150MB total)

COPY --from=build /build/go2rtc /usr/local/bin/
COPY --from=ngrok /bin/ngrok /usr/local/bin/

ENTRYPOINT ["/sbin/tini", "--"]
VOLUME /config
WORKDIR /config

CMD ["go2rtc", "-config", "/config/go2rtc.yaml"]