Can sites change gatsby-remark-images options?

[nareddyt]

I used https://github.com/LekoArts/gatsby-starter-minimal-blog to create my own gatsby site. This imports the default options for gatsby-remark-images specified in gatsby-theme-minimal-blog-core

gatsby-themes/themes/gatsby-theme-minimal-blog-core/gatsby-config.js

Lines 39 to 49 in 06750c2

	gatsbyRemarkPlugins: [
	{
	resolve: `gatsby-remark-images`,
	options: {
	maxWidth: 960,
	quality: 90,
	linkImagesToOriginal: false,
	backgroundColor: `transparent`,
	},
	},
	],

Is there any way for me to adjust these defaults from my gatsby site? I would like to change the image width and support captions.

From my understanding, one workaround proposed in #910 is to disable mdx in the gatsby-theme-minimal-blog-core and import the entire plug config myself. But this is not ideal because:

1. It requires a bit of code duplication.
2. I need to install these deps manually, including pinning to the correct versions.

Is there a similar approach?