Add Docker support

Signed-off-by: Gary Kim <gary@garykim.dev>

.dockerignore

@@ -0,0 +1,4 @@
+/docker/janus
+/docker/coturn
+/Dockerfile
+/docker-compose.yml

Dockerfile

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+FROM golang:1.13 AS builder
+
+RUN apt-get update && apt-get install -y python3
+WORKDIR /workdir
+
+COPY . .
+RUN make build
+
+FROM alpine:3.11
+
+ENV CONFIG=/config/server.conf
+RUN adduser -D spreedbackend && \
+    apk add --no-cache --no-cache ca-certificates libc6-compat libstdc++
+USER spreedbackend
+COPY --from=builder /workdir/bin/signaling /usr/local/signaling
+COPY ./server.conf.in /config/server.conf
+
+CMD ["/bin/sh", "-c", "/usr/local/signaling --config=$CONFIG"]

README.md

@@ -72,6 +72,21 @@ systemctl enable signaling.service
 systemctl start signaling.service
 ```
 
+### Running with Docker
+
+#### Docker Compose
+
+You will likely have to adjust the Janus command line options depending on the exact network configuration on your server. Refer to [Setup of Janus](#setup-of-janus) and the Janus documentation for how to configure your Janus server.
+
+Copy `server.conf.in` to `server.conf` and adjust it to your liking. 
+
+If you're using the [docker-compose.yml](docker-compose.yml) configuration as is, the MCU Url must be set to `ws://localhost:8188`, the NATS Url must be set to `nats://localhost:4222`, and TURN Servers must be set to `turn:localhost:3478?transport=udp,turn:localhost:3478?transport=tcp`.
+
+```bash
+docker-compose build
+docker-compose up -d
+```
+
 ## Setup of NATS server
 
 There is a detailed description on how to install and run the NATS server

docker-compose.yml

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+version: '3'
+
+services:
+  spreedbackend:
+    build: .
+    volumes:
+      - ./server.conf:/config/server.conf
+    network_mode: host
+    restart: unless-stopped
+    depends_on:
+      - nats
+      - janus
+      - coturn
+  nats:
+    image: nats:2.1
+    volumes:
+      - ./gnatsd.conf:/config/gnatsd.conf
+    command: ["-c", "/config/gnatsd.conf"]
+    network_mode: host
+    restart: unless-stopped
+  janus:
+    build: docker/janus
+    command: ["janus"]
+    network_mode: host
+    restart: unless-stopped
+  coturn:
+    build: docker/coturn
+    network_mode: host
+    environment:
+      REALM: nextcloud.domain.invalid
+      STATIC_SECRET: static_secret_same_in_server_conf
+    restart: unless-stopped

docker/coturn/Dockerfile

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+FROM alpine:3.11
+
+RUN apk add --no-cache coturn
+
+CMD ["/bin/sh", "-c", "turnserver --prod --fingerprint --use-auth-secret --static-auth-secret=$STATIC_SECRET --realm=$REALM --no-multicast-peers --no-tls --no-dtls"]

docker/janus/Dockerfile

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+# Modified from https://gitlab.com/powerpaul17/nc_talk_backend/-/blob/dcbb918d8716dad1eb72a889d1e6aa1e3a543641/docker/janus/Dockerfile
+FROM alpine:3.11
+
+RUN apk add --no-cache curl autoconf automake libtool pkgconf build-base \
+  glib-dev libconfig-dev libnice-dev jansson-dev openssl-dev zlib libsrtp-dev \
+  gengetopt libwebsockets-dev git
+
+# usrsctp
+ARG USRSCTP_VERSION=4069ba5b9587bd7c99d964756b527d6259f0d3da
+
+RUN cd /tmp && \
+    git clone https://github.com/sctplab/usrsctp && \
+    cd usrsctp && \
+    git checkout $USRSCTP_VERSION && \
+    ./bootstrap && \
+    ./configure --prefix=/usr && \
+    make && make install
+
+# JANUS
+
+ARG JANUS_VERSION=0.9.2
+RUN mkdir -p /usr/src/janus && \
+    cd /usr/src/janus && \
+    curl -L https://github.com/meetecho/janus-gateway/archive/v$JANUS_VERSION.tar.gz | tar -xz && \
+    cd /usr/src/janus/janus-gateway-$JANUS_VERSION && \
+    ./autogen.sh && \
+    ./configure --disable-rabbitmq --disable-mqtt --disable-boringssl && \
+    make && \
+    make install && \
+    make configs
+
+WORKDIR /usr/src/janus/janus-gateway-$JANUS_VERSION
+
+CMD [ "janus" ]