A Rtmp (nginx-rtmp) and HTTP server (nginx). Host your Rtmp streaming content and see the result with the embeded client (vgaplayer). All hosted on docker.
Based on https://hub.docker.com/r/tiangolo/nginx-rtmp/.

sudo sh dockerBuild.sh

• Run a container with the command above
• Open OBS Studio
• Click the "Settings" button
• Go to the "Stream" section
• In "Stream Type" select "Custom Streaming Server"
• In the "URL" enter the rtmp://<ip_of_host>/live replacing <ip_of_host> with the IP of the host in which the container is running. For example: rtmp://192.168.0.30/live
• In the "Stream key" use a "key" that will be used later in the client URL to display that specific stream. For example: test
• Click the "OK" button
• In the section "Sources" click de "Add" button (+) and select a source (for example "Screen Capture") and configure it as you need
• Click the "Start Streaming" button
• Open a VLC player (it also works in Raspberry Pi using omxplayer)
• Click in the "Media" menu
• Click in "Open Network Stream"
• Enter the URL from above as rtmp://<ip_of_host>/live/ replacing <ip_of_host> with the IP of the host in which the container is running and with the key you created in OBS Studio. For example: rtmp://192.168.0.30/live/test
• Click "Play"
• Now VLC should start playing whatever you are transmitting from OBS Studio