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chore: deploy to fly.io
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sorax committed Nov 17, 2023
1 parent 31b854c commit fcb5eab
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45 changes: 45 additions & 0 deletions .dockerignore
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# This file excludes paths from the Docker build context.
#
# By default, Docker's build context includes all files (and folders) in the
# current directory. Even if a file isn't copied into the container it is still sent to
# the Docker daemon.
#
# There are multiple reasons to exclude files from the build context:
#
# 1. Prevent nested folders from being copied into the container (ex: exclude
# /assets/node_modules when copying /assets)
# 2. Reduce the size of the build context and improve build time (ex. /build, /deps, /doc)
# 3. Avoid sending files containing sensitive information
#
# More information on using .dockerignore is available here:
# https://docs.docker.com/engine/reference/builder/#dockerignore-file

.dockerignore

# Ignore git, but keep git HEAD and refs to access current commit hash if needed:
#
# $ cat .git/HEAD | awk '{print ".git/"$2}' | xargs cat
# d0b8727759e1e0e7aa3d41707d12376e373d5ecc
.git
!.git/HEAD
!.git/refs

# Common development/test artifacts
/cover/
/doc/
/test/
/tmp/
.elixir_ls

# Mix artifacts
/_build/
/deps/
*.ez

# Generated on crash by the VM
erl_crash.dump

# Static artifacts - These should be fetched and built inside the Docker image
/assets/node_modules/
/priv/static/assets/
/priv/static/cache_manifest.json
97 changes: 97 additions & 0 deletions Dockerfile
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# Find eligible builder and runner images on Docker Hub. We use Ubuntu/Debian
# instead of Alpine to avoid DNS resolution issues in production.
#
# https://hub.docker.com/r/hexpm/elixir/tags?page=1&name=ubuntu
# https://hub.docker.com/_/ubuntu?tab=tags
#
# This file is based on these images:
#
# - https://hub.docker.com/r/hexpm/elixir/tags - for the build image
# - https://hub.docker.com/_/debian?tab=tags&page=1&name=bullseye-20231009-slim - for the release image
# - https://pkgs.org/ - resource for finding needed packages
# - Ex: hexpm/elixir:1.15.7-erlang-26.0.2-debian-bullseye-20231009-slim
#
ARG ELIXIR_VERSION=1.15.7
ARG OTP_VERSION=26.0.2
ARG DEBIAN_VERSION=bullseye-20231009-slim

ARG BUILDER_IMAGE="hexpm/elixir:${ELIXIR_VERSION}-erlang-${OTP_VERSION}-debian-${DEBIAN_VERSION}"
ARG RUNNER_IMAGE="debian:${DEBIAN_VERSION}"

FROM ${BUILDER_IMAGE} as builder

# install build dependencies
RUN apt-get update -y && apt-get install -y build-essential git \
&& apt-get clean && rm -f /var/lib/apt/lists/*_*

# prepare build dir
WORKDIR /app

# install hex + rebar
RUN mix local.hex --force && \
mix local.rebar --force

# set build ENV
ENV MIX_ENV="prod"

# install mix dependencies
COPY mix.exs mix.lock ./
RUN mix deps.get --only $MIX_ENV
RUN mkdir config

# copy compile-time config files before we compile dependencies
# to ensure any relevant config change will trigger the dependencies
# to be re-compiled.
COPY config/config.exs config/${MIX_ENV}.exs config/
RUN mix deps.compile

COPY priv priv

COPY lib lib

COPY assets assets

# compile assets
RUN mix assets.deploy

# Compile the release
RUN mix compile

# Changes to config/runtime.exs don't require recompiling the code
COPY config/runtime.exs config/

COPY rel rel
RUN mix release

# start a new build stage so that the final image will only contain
# the compiled release and other runtime necessities
FROM ${RUNNER_IMAGE}

RUN apt-get update -y && \
apt-get install -y libstdc++6 openssl libncurses5 locales ca-certificates \
&& apt-get clean && rm -f /var/lib/apt/lists/*_*

# Set the locale
RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen

ENV LANG en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8

WORKDIR "/app"
RUN chown nobody /app

# set runner ENV
ENV MIX_ENV="prod"

# Only copy the final release from the build stage
COPY --from=builder --chown=nobody:root /app/_build/${MIX_ENV}/rel/radiator ./

USER nobody

# If using an environment that doesn't automatically reap zombie processes, it is
# advised to add an init process such as tini via `apt-get install`
# above and adding an entrypoint. See https://github.com/krallin/tini for details
# ENTRYPOINT ["/tini", "--"]

CMD ["/app/bin/server"]
29 changes: 29 additions & 0 deletions fly.toml
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# fly.toml app configuration file generated for radiator on 2023-11-17T17:55:50+01:00
#
# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
#

app = "radiator"
primary_region = "ams"
kill_signal = "SIGTERM"

[build]

[deploy]
release_command = "/app/bin/migrate"

[env]
PHX_HOST = "radiator.fly.dev"
PORT = "8080"

[http_service]
internal_port = 8080
force_https = true
auto_stop_machines = true
auto_start_machines = true
min_machines_running = 0
processes = ["app"]
[http_service.concurrency]
type = "connections"
hard_limit = 1000
soft_limit = 1000
28 changes: 28 additions & 0 deletions lib/radiator/release.ex
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defmodule Radiator.Release do
@moduledoc """
Used for executing DB release tasks when run in production without Mix
installed.
"""
@app :radiator

def migrate do
load_app()

for repo <- repos() do
{:ok, _, _} = Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :up, all: true))
end
end

def rollback(repo, version) do
load_app()
{:ok, _, _} = Ecto.Migrator.with_repo(repo, &Ecto.Migrator.run(&1, :down, to: version))
end

defp repos do
Application.fetch_env!(@app, :ecto_repos)
end

defp load_app do
Application.load(@app)
end
end
8 changes: 8 additions & 0 deletions rel/env.sh.eex
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#!/bin/sh

# configure node for distributed erlang with IPV6 support
export ERL_AFLAGS="-proto_dist inet6_tcp"
export ECTO_IPV6="true"
export DNS_CLUSTER_QUERY="${FLY_APP_NAME}.internal"
export RELEASE_DISTRIBUTION="name"
export RELEASE_NODE="${FLY_APP_NAME}-${FLY_IMAGE_REF##*-}@${FLY_PRIVATE_IP}"
3 changes: 3 additions & 0 deletions rel/overlays/bin/migrate
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#!/bin/sh
cd -P -- "$(dirname -- "$0")"
exec ./radiator eval Radiator.Release.migrate
1 change: 1 addition & 0 deletions rel/overlays/bin/migrate.bat
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call "%~dp0\radiator" eval Radiator.Release.migrate
3 changes: 3 additions & 0 deletions rel/overlays/bin/server
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#!/bin/sh
cd -P -- "$(dirname -- "$0")"
PHX_SERVER=true exec ./radiator start
2 changes: 2 additions & 0 deletions rel/overlays/bin/server.bat
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set PHX_SERVER=true
call "%~dp0\radiator" start

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