agent/Dockerfile

ARG GO_IMAGE=golang:1.25-trixie
ARG RUNTIME_IMAGE=debian:trixie-slim
ARG VERSION=0.0.0
FROM ${GO_IMAGE} AS build-machinery
LABEL AUTHOR=uug.ai

# Re-declare VERSION inside this stage so the value passed via
# `--build-arg VERSION=...` (e.g. the release tag) is available below.
# ARGs declared before the first FROM are not visible inside build stages.
ARG VERSION
ARG TARGETARCH

ENV GOROOT=/usr/local/go
ENV GOPATH=/go
ENV PATH=$GOPATH/bin:$GOROOT/bin:/usr/local/lib:$PATH
ENV GOSUMDB=off

##########################################
# Installing some additional dependencies.

RUN apt-get update && apt-get install -y --fix-missing --no-install-recommends \
	git build-essential cmake pkg-config unzip libgtk2.0-dev \
	curl ca-certificates libavcodec-dev libavutil-dev libcurl4-openssl-dev \
	libssl-dev libjpeg62-turbo-dev libswscale-dev && \
	rm -rf /var/lib/apt/lists/*

##############################################################################
# Copy all the relevant source code in the Docker image, so we can build this.

RUN mkdir -p /go/src/github.com/kerberos-io/agent
COPY machinery /go/src/github.com/kerberos-io/agent/machinery
RUN rm -rf /go/src/github.com/kerberos-io/agent/machinery/.env

##################################################################
# Get the latest commit hash, so we know which version we're running
COPY .git /go/src/github.com/kerberos-io/agent/.git
RUN cd /go/src/github.com/kerberos-io/agent/.git && git log --format="%H" -n 1 | head -c7 > /go/src/github.com/kerberos-io/agent/machinery/version
RUN cat /go/src/github.com/kerberos-io/agent/machinery/version

##################
# Build Machinery

RUN cd /go/src/github.com/kerberos-io/agent/machinery && \
	go mod download && \
	if [ -z "${VERSION}" ] || [ "${VERSION}" = "0.0.0" ]; then \
		VERSION=$(cd /go/src/github.com/kerberos-io/agent && git describe --tags --always 2>/dev/null || echo "0.0.0"); \
	fi && \
	BUILD_TAGS=timetzdata,netgo,osusergo && \
	case "${TARGETARCH:-$(go env GOARCH)}" in amd64|arm64) BUILD_TAGS="moq,${BUILD_TAGS}" ;; esac && \
	go build -tags "${BUILD_TAGS}" --ldflags "-s -w -X github.com/kerberos-io/agent/machinery/src/utils.VERSION=${VERSION}" main.go && \
	mkdir -p /agent && \
	mv main /agent && \
	mv version /agent && \
	mv data /agent && \
	mkdir -p /agent/data/cloud && \
	mkdir -p /agent/data/snapshots && \
	mkdir -p /agent/data/log && \
	mkdir -p /agent/data/recordings && \
	mkdir -p /agent/data/capture-test && \
	mkdir -p /agent/data/config

####################################
# Let's create a /dist folder containing just the files necessary for runtime.
# Later, it will be copied as the / (root) of the output image.

WORKDIR /dist
RUN cp -r /agent ./

####################################################################################
# This will collect dependent libraries so they're later copied to the final image.

RUN /dist/agent/main version

FROM node:22-alpine AS build-ui

RUN apk update && apk upgrade --available && sync

########################
# Build Web (React app)

RUN mkdir -p /go/src/github.com/kerberos-io/agent/machinery/www
COPY ui /go/src/github.com/kerberos-io/agent/ui
RUN cd /go/src/github.com/kerberos-io/agent/ui && rm -rf yarn.lock && yarn config set network-timeout 300000 && \
	yarn && yarn build

####################################
# Let's create a /dist folder containing just the files necessary for runtime.
# Later, it will be copied as the / (root) of the output image.

WORKDIR /dist
RUN mkdir -p ./agent && cp -r /go/src/github.com/kerberos-io/agent/machinery/www ./agent/

############################################
# Publish main binary to GitHub release

FROM ${RUNTIME_IMAGE}

############################
# Protect by non-root user.

RUN apt-get update && apt-get install -y --no-install-recommends \
	ca-certificates curl ffmpeg libatomic1 libcap2-bin libstdc++6 && \
	rm -rf /var/lib/apt/lists/* && \
	groupadd --system kerberosio && \
	useradd --system --gid kerberosio --groups video --create-home agent

#################################
# Copy files from previous images

COPY --chown=0:0 --from=build-machinery /dist /
COPY --chown=0:0 --from=build-ui /dist /

##################
# Try running agent

RUN mv /agent/* /home/agent/
RUN /home/agent/main version

#######################
# Make template config

RUN cp /home/agent/data/config/config.json /home/agent/data/config.template.json

###########################
# Set permissions correctly

RUN chown -R agent:kerberosio /home/agent/data
RUN chown -R agent:kerberosio /home/agent/www

###########################
# Grant the necessary root capabilities to the process trying to bind to the privileged port
RUN setcap 'cap_net_bind_service=+ep' /home/agent/main

###################
# Run non-root user

USER agent

######################################
# By default the app runs on port 80

EXPOSE 80

######################################
# Check if agent is still running

HEALTHCHECK CMD curl --fail http://localhost:80 || exit 1   

###################################################
# Leeeeettttt'ssss goooooo!!!
# Run the shizzle from the right working directory.
WORKDIR /home/agent
CMD ["./main", "-action", "run", "-port", "80"]