luci-lib-taskd/luasrc/view/tasks/docker.htm

<% if self.task_start_failed then %>
<div class="alert-message warning"><%:Another task running, try again later.%> <a href="javascript:void(taskd.show_log('<%=self.task_id%>'))"><%:Click here to check running task%></a></div>
<% end %>

<%+cbi/map%>
<%
local task_running = false
local taskd = require "luci.model.tasks"
local status = taskd.status(self.task_id)
task_running = status.running
-%>
<div class="cbi-page-actions control-group">
<%
if not task_running then
%>
    <%
    local util  = require "luci.util"
    local container_status = util.trim(util.exec(self.script_path.." status"))
    local container_status_lower = string.lower(util.trim(util.exec(self.script_path.." status")))
    local container_install = not string.match(container_status_lower, " is not installed$")
    local container_running = string.match(string.lower(container_status), "^up .* (seconds|minutes|hours)")
    if container_install then
    -%>
    <input class="btn cbi-button cbi-button-apply" type="button" value="<%:Upgrade%>/<%:Apply%>" onclick="cbi_submit(this, 'cbi.apply', 'upgrade')" />
    <%
        if container_running then
    -%>
    <input class="btn cbi-button cbi-button-remove" type="button" value="<%:Stop%>" onclick="cbi_submit(this, 'cbi.apply', 'stop')" />

    <input class="btn cbi-button cbi-button-reload" type="button" value="<%:Restart%>" onclick="cbi_submit(this, 'cbi.apply', 'restart')" />
        <% else %>
    <input class="btn cbi-button cbi-button-apply" type="button" value="<%:Start%>" onclick="cbi_submit(this, 'cbi.apply', 'start')" />

    <input class="btn cbi-button cbi-button-remove" type="button" value="<%:Remove%>" onclick="cbi_submit(this, 'cbi.apply', 'rm')" />
        <% end
      else %>
    <input class="btn cbi-button cbi-button-apply" type="button" value="<%:Install%>" onclick="cbi_submit(this, 'cbi.apply', 'install')" />
    <% end
else
    %>
    <input class="btn cbi-button cbi-button-apply" type="button" value="<%:Task Running%>&hellip;" onclick="taskd.show_log('<%=self.task_id%>')" />
<%
end
%>
</div>

<%+tasks/embed%>
<%
if self.auto_show_task and task_running then
-%>
<script>
    taskd.show_log("<%=self.task_id%>");
</script>
<%
end
%>