fun neovim lua telescope demo from Developer Voices https://www.youtube.com/watch?v=HXABdG3xJW4

init.lua

local pickers = require('telescope.pickers')
local config = require('telescope.config').values
local finders = require('telescope.finders')
local previewers = require('telescope.previewers')
local utils = require('telescope.previewers.utils')
local actions = require('telescope.actions')
local actions_state = require('telescope.actions.state')

local log = require('plenary.log'):new()
log.level = 'debug'

local M = {}

local function flatten(tbl)
  local result = {}
  for _, v in ipairs(tbl) do
    if type(v) == "table" then
      for _, v2 in ipairs(flatten(v)) do
        table.insert(result, v2)
      end
    else
      table.insert(result, v)
    end
  end
  return result
end

M.show_docker_images = function(opts)
  pickers.new(opts, {

    finder = finders.new_async_job({
      command_generator = function()
        return { "docker", "images", "--format", "json" }
      end,
      entry_maker = function(entry)
        local parsed = vim.json.decode(entry)
        if parsed == nil then
          return
        end
        return {
          value = parsed,
          display = parsed.Repository,
          ordinal = parsed.Repository .. ':' .. parsed.Tag,
        }
      end,

    }),
    sorter = config.generic_sorter(opts),

    previewer = previewers.new_buffer_previewer({
      title = 'Docker Image Details',
      define_preview = function(self, entry)
        vim.api.nvim_buf_set_lines(
          self.state.bufnr,
          0,
          0,
          true,
          flatten({
            "# " .. entry.value.ID,
            "",
            "```lua",
            vim.split(vim.inspect(entry.value), "\n"),
            "```",
          })
        )
        utils.highlighter(self.state.bufnr, "markdown")
      end
    }),

    attach_mappings = function(prompt_bufnr)
      actions.select_default:replace(function()
        local selection = actions_state.get_selected_entry()
        actions.close(prompt_bufnr)

        local command = {
          "edit",
          "term://docker",
          "run",
          "-it",
          selection.value.Repository,
        }
        vim.cmd(vim.fn.join(command, ' '))

      end)
      return true
    end

  }):find()
end

M.show_docker_images()

return M