mapproxy config for usgs quads, mbtiles attempt

gistfile1.yml

services:
  demo:
  kml:
  tms:
    # needs no arguments
  wmts:
  wms:
    # srs: ['EPSG:4326', 'EPSG:900913']
    # image_formats: ['image/jpeg', 'image/png']
    md:
      # metadata used in capabilities documents
      title: MapProxy WMS Proxy

layers:
  - name: usgs
    title: USGS test
    sources: [slo_usgs_cache]
    
caches:
  slo_usgs_cache:
    sources: []
    grids: [GLOBAL_MERCATOR]
    cache:
      type: mbtiles
      filename: /Users/me/Documents/MapBox/tiles/slo_usgs.mbtiles
    coverage:
      bbox_srs: 'EPSG:4326'
      bbox: [34.87497870982493, -121.37605128402282, 35.87498049818777, -119.37594688316540]

globals:

  # # cache options
  cache:
    # where to store the cached images
    base_dir: './cache_data'
    # where to store lockfiles
    lock_dir: './cache_data/locks'

  # image/transformation options
  image:
      resampling_method: nearest
      # resampling_method: bilinear
      # resampling_method: bicubic
  #     jpeg_quality: 90