mirror of
https://github.com/warmbly/warmbly.git
synced 2026-08-18 16:01:18 +00:00
Matthew Meszaros
35 lines
1.2 KiB
Docker
35 lines
1.2 KiB
Docker
# syntax=docker/dockerfile:1.7
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#
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# Hot-reload image for the Elixir/Phoenix realtime service. Used only
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# by the `make dev` flow — production still uses realtime.Dockerfile
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# with `mix release`.
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#
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# Phoenix already has built-in code reloading via the BEAM, so we
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# don't need an external file watcher. `mix phx.server` boots once and
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# the Phoenix endpoint hot-recompiles modules whenever source files
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# change under bind-mounted /app.
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#
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# The container expects:
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# - realtime/ bind-mounted at /app
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# - deps/ and _build/ on named volumes so deps survive container
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# recreates AND are shared across worktrees.
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FROM elixir:1.18-otp-26-alpine
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RUN apk add --no-cache git build-base inotify-tools
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RUN mix local.hex --force && mix local.rebar --force
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ENV MIX_ENV=dev
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ENV ERL_AFLAGS="-kernel shell_history enabled"
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WORKDIR /app
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# Wrapper script: deps.get is cheap when the lock matches deps/, so
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# running it on every boot is the right tradeoff — it picks up
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# mix.lock changes without forcing the operator to rebuild the image.
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COPY deploy/docker/elixir-dev-entrypoint.sh /usr/local/bin/entrypoint.sh
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RUN chmod +x /usr/local/bin/entrypoint.sh
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ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
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