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Devcontainer setup for Elixir projects — operate at DevCon 4

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devcon4 priv templates devcontainer devcontainer.json.eex
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priv/templates/devcontainer/devcontainer.json.eex

{
"name": "<%= @project_name %>",
"build": {
"dockerfile": "Dockerfile",
"args": {
"TZ": "${localEnv:TZ:<%= @timezone %>}",
"CLAUDE_CODE_VERSION": "latest",
"ZSH_IN_DOCKER_VERSION": "1.2.0"
}
},
"runArgs": [
"--cap-add=NET_ADMIN",
"--cap-add=NET_RAW"
],
"remoteUser": "developer",
"mounts": [
"source=<%= @volume_prefix %>-bashhistory-${devcontainerId},target=/commandhistory,type=volume",
"source=<%= @volume_prefix %>-claude-config-${devcontainerId},target=/home/developer/.claude,type=volume"
],
"containerEnv": {
"CLAUDE_CONFIG_DIR": "/home/developer/.claude",
"POWERLEVEL9K_DISABLE_GITSTATUS": "true"
},
"customizations": {
"vscode": {
"extensions": [
"JakeBecker.elixir-ls"
]
}
},
"workspaceMount": "source=${localWorkspaceFolder},target=/workspace,type=bind,consistency=delegated",
"workspaceFolder": "/workspace",
"postCreateCommand": "mix deps.get",
"postStartCommand": "sudo /usr/local/bin/init-firewall.sh",
"waitFor": "postStartCommand"
}