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Can't override bootstrap.min.css when using Jahia Bootstrap4 module

Question

We want to use our own version of bootstrap4.min.css with a custom theme.

When putting this file in a module on a css directory, our file is not served. We call the resource using this instruction 

<template:addResources type="css" resources="bootstrap.min.css"/>

Answer

In Bootstrap 4, the module bootstrap4-core use a  Jahia-Module-Priority of 2.

So if you want to use your own version of bootstrap.min.css, then you should use a Jahia-Module-Priority bigger than 2

You can do this in your pom.xml

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.felix</groupId>
            <artifactId>maven-bundle-plugin</artifactId>
            <extensions>true</extensions>
            <configuration>
                <instructions>
                    <Jahia-Module-Priority>10</Jahia-Module-Priority>
                </instructions>
            </configuration>
        </plugin>
    </plugins>
</build>