Update ghost
Update ghost

Changes:

- https://github.com/docker-library/ghost/commit/7f2cc22: Update to 3.40.0, ghost-cli 1.15.3
- https://github.com/docker-library/ghost/commit/34a95e7: Update to 3.39.3, ghost-cli 1.15.3
- https://github.com/docker-library/ghost/commit/3eeb983: Update to 2.38.2, ghost-cli 1.15.3

docker-library/official-images,infosiftr/stackbrew,docker-solr/official-images,infosiftr/stackbrew,dinogun/official-images,docker-library/official-images,31z4/official-images,docker-library/official-images,thresheek/official-images,neo-technology/docker-official-images,docker-solr/official-images,neo-technology/docker-official-images,neo-technology/docker-official-images,docker-library/official-images,docker-solr/official-images,docker-library/official-images,thresheek/official-images,neo-technology/docker-official-images,docker-solr/official-images,neo-technology/docker-official-images,docker-solr/official-images,dinogun/official-images,31z4/official-images,dinogun/official-images,thresheek/official-images,neo-technology/docker-official-images,dinogun/official-images,dinogun/official-images,docker-library/official-images,neo-technology/docker-official-images,31z4/official-images,neo-technology/docker-official-images,docker-solr/official-images,infosiftr/stackbrew,thresheek/official-images,infosiftr/stackbrew,infosiftr/stackbrew,infosiftr/stackbrew,thresheek/official-images,31z4/official-images,infosiftr/stackbrew,dinogun/official-images,31z4/official-images,infosiftr/stackbrew,thresheek/official-images,neo-technology/docker-official-images,31z4/official-images,dinogun/official-images,docker-library/official-images,dinogun/official-images,31z4/official-images,dinogun/official-images,docker-solr/official-images,thresheek/official-images,thresheek/official-images,neo-technology/docker-official-images,infosiftr/stackbrew,docker-library/official-images,docker-library/official-images,31z4/official-images,docker-solr/official-images,infosiftr/stackbrew,31z4/official-images,docker-solr/official-images,docker-library/official-images,neo-technology/docker-official-images,dinogun/official-images,thresheek/official-images,31z4/official-images,dinogun/official-images,thresheek/official-images,docker-library/official-images,31z4/official-images,docker-solr/official-images,docker-solr/official-images,dinogun/official-images,dinogun/official-images,neo-technology/docker-official-images,docker-solr/official-images,infosiftr/stackbrew,31z4/official-images,thresheek/official-images,docker-solr/official-images,neo-technology/docker-official-images,docker-library/official-images,docker-solr/official-images,31z4/official-images,31z4/official-images,docker-library/official-images,infosiftr/stackbrew,thresheek/official-images,thresheek/official-images,thresheek/official-images,neo-technology/docker-official-images,infosiftr/stackbrew,infosiftr/stackbrew,docker-library/official-images