Bump Nginx to 1.19.7, ffmpeg to 4.3.2 and alpine to 3.13 (#91)

reference change in readme

Author: joschahenningsen

Dockerfile

@@ -1,11 +1,11 @@
-ARG NGINX_VERSION=1.18.0
+ARG NGINX_VERSION=1.19.7
 ARG NGINX_RTMP_VERSION=1.2.1
-ARG FFMPEG_VERSION=4.3.1
+ARG FFMPEG_VERSION=4.3.2
 
 
 ##############################
 # Build the NGINX-build image.
-FROM alpine:3.11 as build-nginx
+FROM alpine:3.13 as build-nginx
 ARG NGINX_VERSION
 ARG NGINX_RTMP_VERSION
 

README.md

@@ -2,9 +2,9 @@
 A Dockerfile installing NGINX, nginx-rtmp-module and FFmpeg from source with
 default settings for HLS live streaming. Built on Alpine Linux.
 
-* Nginx 1.18.0 (Stable version compiled from source)
+* Nginx 1.19.7 (Mainline version compiled from source)
 * nginx-rtmp-module 1.2.1 (compiled from source)
-* ffmpeg 4.3.1 (compiled from source)
+* ffmpeg 4.3.2 (compiled from source)
 * Default HLS settings (See: [nginx.conf](nginx.conf))
 
 [![Docker Stars](https://img.shields.io/docker/stars/alfg/nginx-rtmp.svg)](https://hub.docker.com/r/alfg/nginx-rtmp/)