use newer nginx version and use variables in dockerfile

Author: Athlon1600

README.md

@@ -9,16 +9,16 @@ See a demo here - https://demo.streamplanet.tv/
 
 ## Installation
 
-Download all the files first:
+Clone this repository:
 
 ```shell
 git clone https://github.com/Athlon1600/nginx-rtmp-server.git
 ```
 
-Next, you need docker.
+Next, you need Docker.
 
 **Windows**  
-If you are testing this from your local windows computer, download Docker from here:
+If you are testing this from your local Windows computer, download Docker from here:
 https://docs.docker.com/docker-for-windows/install/
 
 **Linux**  

rtmp/Dockerfile

@@ -1,4 +1,8 @@
-FROM debian:bullseye-slim
+FROM debian:bookworm-slim
+
+## rtmp-module was last updated May 15, 2022
+## Nginx version is from 19 Oct 2022
+ENV NGINX_VERSION=1.22.1
 
 RUN apt-get update
 
@@ -12,12 +16,12 @@ RUN apt-get install -y ffmpeg
 RUN apt-get install -y curl vim glances
 
 ## Install nginx
-RUN curl -OL https://nginx.org/download/nginx-1.20.2.tar.gz
-RUN tar -zxf nginx-1.20.2.tar.gz
+RUN curl -OL https://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz
+RUN tar -zxf nginx-${NGINX_VERSION}.tar.gz
 
 RUN curl -OL "https://github.com/sergey-dryabzhinsky/nginx-rtmp-module/archive/dev.tar.gz"
 RUN tar -xvz -f "dev.tar.gz" && \
-    cd nginx-1.20.2 && \
+    cd nginx-${NGINX_VERSION} && \
     ./configure \
         --prefix=/usr/local/nginx \
         --conf-path=/usr/local/nginx/conf/nginx.conf \

rtmp/nginx.conf

@@ -20,13 +20,21 @@ rtmp {
         idle_streams off;
         chunk_size 4096;
 
-        # ingest only. playable only from within docker network
+        # push your stream to: rtmp://localhost:1935/live/{key}
+        # playable only from within docker/local network
         application live {
             live on;
+            record off;
 
             allow publish all;
-            allow play 172.0.0.1;
+            
+            # Allow playback from localhost
+            allow play 127.0.0.1;
+
+            # Allow playback from Docker internal network
             allow play 172.16.0.0/12;
+
+            # uncomment below to make it playable from anywhere like your VLC media player: rtmp://localhost:1935/live/{key}
             # allow play all;
 
             idle_streams off;
@@ -43,6 +51,7 @@ rtmp {
             # transcoded bytes from another server should be sent to this app
         }
 
+        # Below is NOT used
         application hls {
 
             live on;