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Generate deployment scripts for an application.

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mix_deploy priv templates custom-function.eex
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priv/templates/custom-function.eex 

#!/bin/sh



# Run custom function/command before starting



# This is normally run under the app OS user.

# It assumes that config is loaded by release config providers and env.sh.



# The release will, in general, need to have a writable directory to process

# the application environment, set with RELEASE_TMP or RELEASE_MUTABLE_DIR



# Exit on errors

set -e



# Config vars

CURRENT_DIR="${CURRENT_DIR:-"<%= current_dir %>"}"

RELEASE_NAME="${RELEASE_NAME:-"<%= release_name %>"}"



<%= case release_system do %>

<% :mix -> %>

CUSTOM_FUNCTION="${CUSTOM_FUNCTION:-"<%= module_name %>.Release.custom_function"}"

$CURRENT_DIR/bin/$RELEASE_NAME eval "$CUSTOM_FUNCTION"

<% :distillery -> %>

# Run Distillery custom command

# https://hexdocs.pm/distillery/extensibility/custom_commands.html

$CURRENT_DIR/bin/$RELEASE_NAME custom_function

<% end %>