chore(devContainers): prevent Docker rebuild on changes

This commit prevents the docker container to be rebuild when we change
the [Development Container
config](https://code.visualstudio.com/docs/devcontainers/containers).

.github/workflows/ai-runner-docker.yaml

@@ -4,11 +4,15 @@ on:
  pull_request:
  paths:
  - "runner/**"
+ paths-ignore:
+ - "runner/.devcontainer/**"
  push:
  branches:
  - main
  paths:
  - "runner/**"
+ paths-ignore:
+ - "runner/.devcontainer/**"
 
 concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
@@ -70,4 +74,4 @@ jobs:
  file: "Dockerfile"
  labels: ${{ steps.meta.outputs.labels }}
  cache-from: type=registry,ref=livepeerci/build:cache
- cache-to: type=registry,ref=livepeerci/build:cache,mode=max
+ cache-to: type=registry,ref=livepeerci/build:cache,mode=max