FROM golang:1.16-alpine AS builder
# Set necessary environment variables needed for our image.
ENV CGO_ENABLED=1 GOOS=linux GOARCH=amd64

RUN apk add libpcap-dev gcc g++ make

# Move to tapper working directory (/tap-build).
WORKDIR /tap-build

COPY tap/go.mod tap/go.sum ./
RUN go mod download
# Copy and build tapper code
COPY tap/src ./
RUN go build -ldflags="-s -w" -o passivetapper .

# Move to api working directory (/api-build).
WORKDIR ../api-build

COPY go.mod go.sum ./
RUN go mod download
# Copy and build api code
COPY . .
RUN go build -ldflags="-s -w" -o apiserver .

FROM alpine:3.13.5

RUN apk add bash libpcap-dev

WORKDIR /app

# Copy binary and config files from /build to root folder of scratch container.
COPY --from=builder ["/api-build/apiserver", "."]
COPY --from=builder ["/tap-build/passivetapper", "."]

COPY scripts/multi-runner.sh ./

# this script runs both apiserver and passivetapper and exits either if one of them exits, preventing a scenario where the container runs without one process
CMD "./multi-runner.sh"