Dockerfile Templates

# Auto-generated by GitBlixt for Elixir/Phoenix apps
ARG ELIXIR_VERSION=1.19.5
ARG OTP_VERSION=28.4.1
ARG DEBIAN_VERSION=trixie-20260316-slim

ARG BUILDER_IMAGE="docker.io/hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
ARG RUNNER_IMAGE="docker.io/debian:trixie-slim"

# --- deps ---
FROM ${BUILDER_IMAGE} AS deps

RUN apt-get update \
  && apt-get install -y --no-install-recommends build-essential git ca-certificates curl \
  && curl -fsSL https://deb.nodesource.com/setup_22.x | bash - \
  && apt-get install -y --no-install-recommends nodejs \
  && rm -rf /var/lib/apt/lists/*

WORKDIR /app

RUN mix local.hex --force && mix local.rebar --force
ENV MIX_ENV="prod"

COPY mix.exs mix.lock ./
RUN mix deps.get --only $MIX_ENV

RUN mkdir config
COPY config/config.exs config/${MIX_ENV}.exs config/
RUN mix deps.compile

# --- builder ---
FROM deps AS builder
ENV MIX_ENV="prod"

COPY priv priv
COPY lib lib
RUN mix compile

COPY assets assets
RUN if [ -f assets/package.json ]; then npm install --prefix assets --production; fi
RUN mix assets.deploy 2>/dev/null || true

COPY config/runtime.exs config/
RUN mix release --overwrite

# --- runner ---
FROM ${RUNNER_IMAGE} AS final

RUN apt-get update \
  && apt-get install -y --no-install-recommends \
    libstdc++6 openssl libncurses6 locales ca-certificates curl \
  && locale-gen en_US.UTF-8 \
  && rm -rf /var/lib/apt/lists/* \
  && sed -i 's/^tty:x:5:/tty:x:5:nobody/' /etc/group

ENV LANG=en_US.UTF-8
ENV LANGUAGE=en_US:en
ENV LC_ALL=en_US.UTF-8
ENV MIX_ENV="prod"
ENV PHX_SERVER=true
ENV PORT=4000

WORKDIR /app
RUN chown nobody /app
COPY --from=builder --chown=nobody:root /app/_build/prod/rel/ /tmp/rel/
RUN cp -r /tmp/rel/*/* ./ && rm -rf /tmp/rel

USER nobody

EXPOSE ${PORT}

CMD sh -c "if [ -f /app/bin/server ]; then exec /app/bin/server; else exec /app/bin/$(ls /app/bin/ | grep -v '.bat' | head -1) start; fi"

# Auto-generated by GitBlixt for Rails apps
FROM docker.io/ruby:3.3-slim AS base

RUN apt-get update -qq \
  && apt-get install -y --no-install-recommends \
    build-essential git libpq-dev curl ca-certificates nodejs npm \
  && rm -rf /var/lib/apt/lists/*

WORKDIR /app

ENV RAILS_ENV=production
ENV BUNDLE_DEPLOYMENT=true
ENV BUNDLE_WITHOUT=development:test

COPY Gemfile Gemfile.lock* ./
RUN bundle install --jobs 4

COPY . .

# If database.yml is missing (e.g. gitignored), generate one that reads DATABASE_URL
RUN if [ ! -f config/database.yml ]; then \
      printf 'production:\n  url: <%%= ENV["DATABASE_URL"] %%>\n' > config/database.yml; \
    fi

RUN if [ -f bin/rails ]; then \
      bundle exec rails assets:precompile 2>/dev/null || true; \
    fi

ENV PORT=4000

EXPOSE ${PORT}

CMD bundle exec puma -b tcp://0.0.0.0:${PORT}

# Auto-generated by GitBlixt for Ruby apps (Sinatra, Rack, etc.)
FROM docker.io/ruby:3.3-slim

RUN apt-get update -qq \
  && apt-get install -y --no-install-recommends \
    build-essential git libpq-dev curl ca-certificates \
  && rm -rf /var/lib/apt/lists/*

WORKDIR /app

ENV BUNDLE_DEPLOYMENT=true
ENV BUNDLE_WITHOUT=development:test

COPY Gemfile Gemfile.lock* ./
RUN bundle install --jobs 4

COPY . .

ENV PORT=4000
EXPOSE ${PORT}

CMD sh -c "if [ -f config.ru ]; then exec bundle exec rackup --host 0.0.0.0 --port ${PORT}; elif [ -f app.rb ]; then exec bundle exec ruby app.rb; else echo 'No config.ru or app.rb found — customize the Dockerfile CMD'; exit 1; fi"

# Auto-generated by GitBlixt for Node.js apps
FROM docker.io/node:22-slim AS deps

WORKDIR /app

RUN apt-get update \
  && apt-get install -y --no-install-recommends ca-certificates \
  && rm -rf /var/lib/apt/lists/*

COPY package*.json ./
RUN if [ -f package-lock.json ]; then npm ci; else npm install; fi

# --- builder ---
FROM deps AS builder
COPY . .
RUN npm run build --if-present

# --- runner ---
FROM docker.io/node:22-slim AS final

WORKDIR /app

RUN apt-get update \
  && apt-get install -y --no-install-recommends ca-certificates dumb-init \
  && rm -rf /var/lib/apt/lists/*

ENV NODE_ENV=production
ENV PORT=4000

COPY --from=builder /app /app

EXPOSE ${PORT}

CMD ["dumb-init", "npm", "start"]

# Auto-generated by GitBlixt for Python apps
FROM docker.io/python:3.12-slim

WORKDIR /app

RUN apt-get update \
  && apt-get install -y --no-install-recommends \
    build-essential libpq-dev curl ca-certificates \
  && rm -rf /var/lib/apt/lists/*

COPY requirements.txt* pyproject.toml* poetry.lock* ./

RUN if [ -f requirements.txt ]; then \
      pip install --no-cache-dir -r requirements.txt; \
    elif [ -f pyproject.toml ]; then \
      pip install --no-cache-dir .; \
    fi \
 && pip install --no-cache-dir gunicorn

COPY . .

ENV PORT=4000
ENV PYTHONUNBUFFERED=1

EXPOSE ${PORT}

# Auto-detects Django (manage.py), then falls back to wsgi.py / app.py / main.py.
# ASGI (FastAPI, Starlette) users should replace this with a uvicorn invocation.
CMD sh -c '\
if [ -f manage.py ]; then \
  python manage.py migrate --noinput; \
  WSGI_DIR=$(find . -maxdepth 3 -name wsgi.py -not -path "./.*" | head -1 | xargs dirname | sed "s|^\./||"); \
  exec gunicorn --bind 0.0.0.0:$PORT "${WSGI_DIR}.wsgi:application"; \
elif [ -f wsgi.py ]; then exec gunicorn --bind 0.0.0.0:$PORT wsgi:application; \
elif [ -f app.py ]; then exec gunicorn --bind 0.0.0.0:$PORT app:app; \
elif [ -f main.py ]; then exec gunicorn --bind 0.0.0.0:$PORT main:app; \
else echo "No entry point found (manage.py, wsgi.py, app.py, or main.py)"; exit 1; \
fi'

# Auto-generated by GitBlixt for Go apps
FROM docker.io/golang:1.23-bookworm AS builder

WORKDIR /app

COPY go.mod go.sum* ./
RUN go mod download

COPY . .

# If a cmd/ directory exists, build the first command found there;
# otherwise build the package at the repo root.
RUN if [ -d cmd ] && [ -n "$(ls -A cmd 2>/dev/null)" ]; then \
      MAIN=$(ls cmd | head -1); \
      CGO_ENABLED=0 GOOS=linux go build -o /app/server ./cmd/$MAIN; \
    else \
      CGO_ENABLED=0 GOOS=linux go build -o /app/server .; \
    fi

# --- runner ---
FROM docker.io/debian:trixie-slim AS final

RUN apt-get update \
  && apt-get install -y --no-install-recommends ca-certificates \
  && rm -rf /var/lib/apt/lists/*

WORKDIR /app
COPY --from=builder /app/server /app/server

ENV PORT=4000
EXPOSE ${PORT}

CMD ["/app/server"]

# Auto-generated by GitBlixt for static HTML/CSS sites
FROM docker.io/nginx:alpine

COPY . /usr/share/nginx/html

RUN printf 'server {\n  listen 4000;\n  root /usr/share/nginx/html;\n  index index.html;\n  location / { try_files $uri $uri/ /index.html; }\n}\n' \
    > /etc/nginx/conf.d/default.conf

ENV PORT=4000
EXPOSE 4000

CMD ["nginx", "-g", "daemon off;"]