Docker image: Nginx for web applications written in Lua on Alpine Linux
This image is supposed to run web applications using static assets and dynamic requests coded in [Lua] or as Lua Pages. This image is built automatically on the top of the tag latest from the Alpine repository, so that it is always based on the latest Alpine Linux. Packages openresty, libuuid and tzdata have to be updated from time to time by triggering a new build manually.
Additional Lua packages included:
- lsqlite3complete - sqlite3 suport
- luafilesystem - directory listing and file locking
- LuaSocket - tcp/udp socket network support
- luatz - time zone support
- lua-resty-cors - cross-origin request support
- lua-resty-gettext - internationalisation support
- lua-resty-hmac - required by lua-resty-jwt``
- lua-resty-jwt - secure session tokens
- lua-resty-libbase64 - fast base64 encoding and decoding
- lua-resty-libr3 - fast router
- lua-resty-mail - smtp library
- lua-resty-murmurhash2 - fast hashes
- lua-resty-random - secure random numbers
- lua-resty-session - cookie-based sessions
- lua-resty-socket - cosocket compatibility fallback
- lua-resty-template - page templates
- lua-resty-uuid - safe unique identifiers
- MobDebug - remote debugging support
- pgmoon - postgres support
docker pull prantlf/nginx-lua-openresty
You can serve a web application consisting of both Lua Pages and static assets:
cd ~/my-web-application
docker run --rm -it -p 80:80 -v "${PWD}/www":/app nginx-lua-openresty
You can add locations to server2.conf to serve REST API or other dynamic content. If you need a global initialization code, you can add it to a file included in the http context. Then you need to pass the files to the container as volumes:
cd ~/my-web-application
docker run --rm -it -p 80:80 -v "${PWD}/www":/app \
-v "${PWD}/conf/http2.conf":/usr/local/openresty/nginx/conf/http2.conf
-v "${PWD}/conf/server2.conf":/usr/local/openresty/nginx/conf/server2.conf \
nginx-lua-openresty
Default content of http2.conf:
init_by_lua_block {
template = require "resty.template"
}
Default content of server2.conf:
location ~ ^(.+\.lsp)(?:\?[^?]*)?$ {
default_type text/html;
set $page $1;
content_by_lua_block {
local template = require "resty.template"
template.render_file(ngx.var.page)
}
}
This image allows adding custom configuration to three Nginx contexts by replacing three files using volumes:
/usr/local/openresty/nginx/conf/nginx2.conf - main
/usr/local/openresty/nginx/conf/http2.conf - http
/usr/local/openresty/nginx/conf/server2.conf - server
You can replace the whole default configuration or its part by using volumes too:
/usr/local/openresty/nginx/conf/nginx.conf - the whole configuration
/usr/local/openresty/nginx/conf/http.conf - the http section
/usr/local/openresty/nginx/conf/server.conf - the server section
The local image is built as nginx-lua-openresty and pushed to the docker hub as prantlf/nginx-lua-openresty:latest.
Remove an old local image:
make clean
Check the Dockerfile:
make lint
Build a new local image:
make build
Enter an interactive shell inside the created image:
make run
Test a default web application:
make serve
Test a customized web application:
make example
Tag the local image for pushing:
make tag
Login to the docker hub:
make login
Push the local image to the docker hub:
make push
Copyright (c) 2020 Ferdinand Prantl
Licensed under the MIT license.