config.json

{
  "map": {
    "projection": "EPSG:900913",
    "units": "m",
    "center": {
      "x": -1.67665601487454,
      "y": 48.111066641561635,
      "crs": "EPSG:4326"
    },
    "zoom": 13,
    "maxExtent": [
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      20037508.34, 20037508.34
    ],
    "layers": [
      {
        "type": "osm",
        "title": "Open Street Map",
        "name": "mapnik",
        "source": "osm",
        "group": "background",
        "visibility": true
      },
      {
        "type": "wms",
        "url":"https://georchestra.mydomain.org/geoserver/ows",
        "visibility": true,
        "opacity": 1.0,
        "title": "Rennes - aires de jeu",
        "name": "espub_mob:gev_ajeu",
        "format": "image/png"
      },
      {
        "type": "wms",
        "url":"https://georchestra.mydomain.org/geoserver/ows",
        "visibility": true,
        "opacity": 1.0,
        "title": "Rennes - jeux",
        "name": "espub_mob:gev_jeu",
        "format": "image/png"
      },
      {
        "source": "ol",
        "group": "background",
        "title": "Empty Background",
        "fixed": true,
        "type": "empty"
      }
    ]
  }
}