52 lines
1.5 KiB
Markdown
52 lines
1.5 KiB
Markdown
---
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title: "Start Erlang's Dialyzer With GUI From A Docker Container"
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blurb: "Everything in OTP is command-line driven, so using containers during development has been without issue. But, Dialyzer, Erlang's static analysis tool, actually has a Graphical User Interface. How can we still use Dialyzer and its GUI even though Elixir is running inside a container?"
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...
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{
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id: "start-erlangs-dialyzer-with-gui-from-a-docker-container"
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}
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I use Docker mostly when working on software projects and I figured out how to get Erlang's Dialyzer GUI working in a Docker container.
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1. Start a container with X11 forwarding:
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```
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$ docker run -it --rm --net=host -e "DISPLAY" -e "NO_AT_BRIDGE=1" \
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-v "$XAUTHORITY:/root/.Xauthority:rw" elixir bash
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```
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2. Build ["the recommended minimal PLT for Erlang/OTP"](https://www.erlang.org/doc/apps/dialyzer/dialyzer_chapter#the-persistent-lookup-table):
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```
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# dialyzer --build_plt --apps erts kernel stdlib mnesia
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Creating PLT /root/.cache/erlang/.dialyzer_plt ...
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...
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done (warnings were emitted)
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```
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3. Start the Dialyzer GUI:
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a. From the command line:
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# dialyzer --gui
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b. From inside an IEx session:
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1. Start the Dialyzer application:
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```elixir
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iex(1)> Application.load(:dialyzer)
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:ok
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```
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2. Start the Dialyzer GUI:
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```elixir
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iex(2)> :dialyzer.gui()
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```
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You should now see the Dialyzer GUI.
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