Skip production builds (#297)

We're adding the `ignore` setting for the `production` context - it
should skip automatic deployment of the dapp after the changes on the
production branch (`main`).

netlify.toml

@@ -1,2 +1,7 @@
 [build]
-  ignore = "git diff --quiet $CACHED_COMMIT_REF $COMMIT_REF ':(exclude).github/' ':(exclude).vscode/'  ':(exclude)core/' ':(exclude).git-blame-ignore-revs' ':(exclude).gitignore' ':(exclude).npmrc' ':(exclude).nvmrc' ':(exclude).pre-commit-config.yaml' ':(exclude).prettierignore' ':(exclude).prettierrc.js' ':(exclude).syncpackrc' ':(exclude)LICENSE' ':(exclude)README.md'"
+  # Don't run builds after the changes touching only the listed paths.
+  ignore = "git diff --quiet $CACHED_COMMIT_REF $COMMIT_REF ':(exclude).github/' ':(exclude).vscode/'  ':(exclude)core/' ':(exclude).git-blame-ignore-revs' ':(exclude).gitignore' ':(exclude).npmrc' ':(exclude).nvmrc' ':(exclude).pre-commit-config.yaml' ':(exclude).prettierignore' ':(exclude).prettierrc.js' ':(exclude).syncpackrc' ':(exclude)LICENSE' ':(exclude)README.md'"
+
+[context.production]
+  # Do not run builds for the production context.
+  ignore = "exit 0"