lupo is a pre-processor for Porter which allows you to build bundles with Lua.
Note: system should already have a working Porter installation (see install instructions). There must also be a luac executable in PATH (temporarily required by Azure/golua).
Just build from source and copy into PATH (requires git, make, and Go 1.11+):
(
set -x && mkdir -p $GOPATH/src/github.com/jdolitsky/ && \
cd $GOPATH/src/github.com/jdolitsky/ && \
[ -d lupo/ ] || git clone [email protected]:jdolitsky/lupo.git && \
cd lupo/ && make build && sudo mv bin/lupo /usr/local/bin/
)
Simply use the lupo command in place of the porter command.
Replace your existing porter.yaml bundle definition with porter.lua.
Here is a simple porter.lua example (notice global bundle variable):
local name = "my-bundle"
local version = "0.1.0"
local description = "this application is extremely important"
-- Example of pushing to your personal Docker Hub account,
-- assuming USER env var matches your Docker Hub username
-- (make sure you create the "my-bundle" repo ahead of time)
local registryHost = "docker.io"
local registryRepo = os.getenv("USER") .. "/" .. name
-- Returns valid input for exec mixin
local function execEcho (desc, msg)
return {description = desc, command = "bash", arguments = {"-c", "echo " .. msg}}
end
bundle = {
name = name,
version = version,
description = description,
invocationImage = registryHost .. "/" .. registryRepo .. ":" .. version,
mixins = {"exec"},
install = {
{
exec = execEcho("Install " .. name, "Hello World")
}
},
uninstall = {
{
exec = execEcho("Uninstall " .. name, "Goodbye World")
}
}
}Run lupo to build the bundle from porter.lua:
$ lupo build
Copying dependencies ===>
Copying mixins ===>
Copying mixin exec ===>
Copying mixin porter ===>
...
If a file named porter.lua is detected in the working directory, lupo will attempt to use this to generate a porter.yaml file in the format expected by Porter, then run Porter itself.
Note: if there is an existing porter.yaml, it will be completely overwritten. You may even wish to place porter.yaml in your .gitignore, as it is dynamically generated each run.
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