cascade/Dockerfile at main · tim-br/cascade · GitHub

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# Production Phoenix Dockerfile
FROM elixir:1.19.4-otp-28 AS builder

# Install build dependencies
RUN apt-get update && \
    apt-get install -y build-essential git curl && \
    curl -fsSL https://deb.nodesource.com/setup_20.x | bash - && \
    apt-get install -y nodejs && \
    rm -rf /var/lib/apt/lists/*

# Install hex and rebar
RUN mix local.hex --force && \
    mix local.rebar --force

WORKDIR /app

# Set build ENV
ENV MIX_ENV=prod


COPY . .

# Copy mix files and fetch dependencies
RUN mix deps.get --only prod
RUN mix deps.compile


RUN mix assets.deploy || true
# Compile application and build release
RUN mix compile
RUN mix release


# Runtime stage - use erlang slim image to match builder's GLIBC version
FROM erlang:28-slim

RUN apt-get update && \
    apt-get install -y \
    locales \
    ca-certificates \
    curl \
    && curl -o /tmp/global-bundle.pem https://truststore.pki.rds.amazonaws.com/global/global-bundle.pem \
    && mkdir -p /usr/local/share/ca-certificates/aws \
    && mv /tmp/global-bundle.pem /usr/local/share/ca-certificates/aws/rds-ca-bundle.pem \
    && rm -rf /var/lib/apt/lists/*

# Set locale
RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen
ENV LANG=en_US.UTF-8 \
    LANGUAGE=en_US:en \
    LC_ALL=en_US.UTF-8

WORKDIR /app

# Copy release from builder
COPY --from=builder /app/_build/prod/rel/init ./

# Expose Phoenix port
EXPOSE 4000

ENV HOME=/app

CMD ["bin/init", "start"]