Gleam Deploy

Gleam Deployment

Detection

Project is Gleam if gleam.toml exists in the root.

Versions

Gleam and Erlang default to latest. Override via mise.toml or .tool-versions.

Erlang available in both build and runtime; Gleam only during build.

Build

Build Process

1. Install Gleam and Erlang
2. Export: gleam export erlang-shipment
3. Output: ./build/erlang-shipment/

Start Command

./build/erlang-shipment/entrypoint.sh run

Source tree not included in final container by default.

Install Stage Optimization

Copy in order:

• gleam.toml, manifest.toml (if present)
• src/ (Gleam source)
• test/ (optional)

Base Images

Dockerfile Patterns

Erlang Shipment (minimal runtime)

FROM ghcr.io/gleam-lang/gleam:latest AS build
WORKDIR /app
COPY gleam.toml manifest.toml* ./
COPY src src
RUN gleam export erlang-shipment

FROM erlang:27-slim
WORKDIR /app
COPY --from=build /app/build/erlang-shipment ./
EXPOSE 8080
CMD ["./entrypoint.sh", "run"]

With source included

FROM ghcr.io/gleam-lang/gleam:latest AS build
WORKDIR /app
COPY . .
RUN gleam export erlang-shipment

FROM erlang:27-slim
WORKDIR /app
COPY --from=build /app/build/erlang-shipment ./
COPY --from=build /app/src ./src
COPY --from=build /app/gleam.toml ./
CMD ["./entrypoint.sh", "run"]