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Commit75f4176

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fix: persist the devtunnel file in a docker volume (#15731)
Addresses#15663.This PR saves the entire coder home directory in a Docker volume to makethe dev tunnel URL persistent across container restarts.I initially wanted to persist only the config directory, but DockerCompose cannot set permissions on a named volume unless the directoryit’s mounted on already exists within the container. The`/home/coder/.config` directory, however, is not created by default inthe Dockerfile. When I attempt to mount it, [Docker creates it with rootpermissions](moby/moby#2259 (comment)),and Coder cannot write to it. I encounter the following error:```coder-1 | Started HTTP listener athttp://0.0.0.0:7080coder-1 | Opening tunnel so workspaces can connect to your deployment. For production scenarios, specify an external access URLcoder-1 | Encountered an error running "coder server", see "coder server --help" for more informationcoder-1 | error: create tunnel: read or generate config: get config path: mkdirall config dir "/home/coder/.config/coderv2": mkdir /home/coder/.config/coderv2: permission denied```Creating the directory in the Dockerfile would resolve the issue for newimages but would break `docker-compose.yml` for all existing Coderimages. Mounting the entire home directory avoids this problem, but itmakes it less clear to admins which files need to be persisted. It’s atrade-off - I believe keeping Docker Compose backwards-compatible ismore important, and I hope the added comment clarifies the purpose ofthe volume for new users.
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‎docker-compose.yaml

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@@ -21,6 +21,10 @@ services:
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# - "998" # docker group on host
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volumes:
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-/var/run/docker.sock:/var/run/docker.sock
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# Run "docker volume rm coder_coder_home" to reset the dev tunnel url (https://abc.xyz.try.coder.app).
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# This volume is not required in a production environment - you may safely remove it.
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# Coder can recreate all the files it needs on restart.
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-coder_home:/home/coder
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depends_on:
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database:
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condition:service_healthy
@@ -47,3 +51,4 @@ services:
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retries:5
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volumes:
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coder_data:
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coder_home:

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