Add Stun server Dockerfile and config (#2)

* Add Stun server Dockerfile and config

* Add coturn image version, remove commented-out code

* Remove usage of root user

* Add docker image building on push to main as well as PR to main

.github/workflows/release.yml

@@ -4,6 +4,12 @@ on:
   release:
     types:
       - published
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
   deploy:
@@ -30,4 +36,4 @@ jobs:
           context: .
           platforms: linux/amd64
           push: ${{ github.event_name == 'release' }}
-          tags: ghcr.io/${{ github.repository }}:${{ github.event.release.tag_name }}
+          tags: ghcr.io/${{ github.repository }}:${{ github.event.release.tag_name || github.sha }}

Dockerfile

@@ -0,0 +1,6 @@
+FROM coturn/coturn:4.6.2-r12
+COPY ./turnserver.conf /etc/coturn/turnserver.conf
+
+ENV DETECT_EXTERNAL_IP=yes
+
+EXPOSE 3478 3478/udp

turnserver.conf

@@ -0,0 +1,3 @@
+# STUN/General
+stun-only
+listening-ip=0.0.0.0