87 lines
3.7 KiB
Bash
Executable File
87 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# check-pins.sh - keep mise.toml and the Dockerfile base-image pins in sync.
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#
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# The Phoenix build has two sources of truth for toolchain versions:
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# - mise.toml [tools]: local dev toolchain (what `mise install` gives you)
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# - Dockerfile ARG pins: the hexpm/elixir builder image used for deploys
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# They must agree, otherwise local builds and deployed images run different
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# Elixir/OTP combinations. Run standalone, or via `make check`.
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#
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# Also verifies that the BUILDER_IMAGE / RUNNER_IMAGE ARGs still expand to the
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# tags composed from the pins (catches hand-edited image references).
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#
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# Pure shell + sed: no mise, docker or elixir needed, so it runs in CI and in
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# sandboxes before the toolchain is installed.
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set -euo pipefail
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root=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
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mise_toml="$root/mise.toml"
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dockerfile="$root/Dockerfile"
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status=0
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die() { echo "MISMATCH: $*" >&2; status=1; }
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# sed-extract a `key = "value"` (or `ARG KEY=value`) line; dies when absent.
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grab() { # grab <description> <key-regex> <file>
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local value
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value=$(sed -n "s/^$2[[:space:]]*=[[:space:]]*//p" "$3")
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if [ -z "$value" ]; then
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die "$1 not found in $3 (expected key = value)"
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fi
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value=${value%\"}; value=${value#\"} # strip optional surrounding quotes
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value=$(printf '%s' "$value" | sed 's/[[:space:]]*$//') # trim trailing ws
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printf '%s' "$value"
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}
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mise_elixir=$(grab 'mise elixir' 'elixir' "$mise_toml")
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mise_erlang=$(grab 'mise erlang' 'erlang' "$mise_toml")
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d_elixir=$(grab 'Dockerfile ELIXIR_VERSION' 'ARG[[:space:]]\+ELIXIR_VERSION' "$dockerfile")
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d_otp=$(grab 'Dockerfile OTP_VERSION' 'ARG[[:space:]]\+OTP_VERSION' "$dockerfile")
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d_debian=$(grab 'Dockerfile DEBIAN_VERSION' 'ARG[[:space:]]\+DEBIAN_VERSION' "$dockerfile")
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if [ $status -eq 0 ]; then
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mise_elixir_ver=${mise_elixir%%-otp-*}
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mise_elixir_otp=${mise_elixir##*-otp-}
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d_otp_major=${d_otp%%.*}
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# Elixir: full version must match exactly.
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[ "$mise_elixir_ver" = "$d_elixir" ] ||
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die "Elixir: mise.toml has $mise_elixir_ver, Dockerfile ELIXIR_VERSION is $d_elixir"
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# mise elixir builds embed their OTP major (…-otp-27); must match the
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# major of the Dockerfile OTP_VERSION.
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[ "$mise_elixir_otp" = "$d_otp_major" ] ||
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die "OTP major: mise.toml elixir built for otp-$mise_elixir_otp, Dockerfile OTP_VERSION major is $d_otp_major"
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# mise `erlang` IS OTP: must match the Dockerfile pin exactly.
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[ "$mise_erlang" = "$d_otp" ] ||
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die "OTP: mise.toml erlang is $mise_erlang, Dockerfile OTP_VERSION is $d_otp"
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# BUILDER_IMAGE must expand to the tag composed from the pins.
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expected_builder="docker.io/hexpm/elixir:${d_elixir}-erlang-${d_otp}-debian-${d_debian}"
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d_builder=$(grab 'Dockerfile BUILDER_IMAGE' 'ARG[[:space:]]\+BUILDER_IMAGE' "$dockerfile")
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expanded_builder=$(printf '%s' "$d_builder" |
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sed -e "s/\${ELIXIR_VERSION}/$d_elixir/" \
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-e "s/\${OTP_VERSION}/$d_otp/" \
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-e "s/\${DEBIAN_VERSION}/$d_debian/")
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[ "$expanded_builder" = "$expected_builder" ] ||
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die "BUILDER_IMAGE expands to $expanded_builder, expected $expected_builder"
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# RUNNER_IMAGE must expand to the Debian pin.
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expected_runner="docker.io/debian:${d_debian}"
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d_runner=$(grab 'Dockerfile RUNNER_IMAGE' 'ARG[[:space:]]\+RUNNER_IMAGE' "$dockerfile")
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expanded_runner=${d_runner/\$\{DEBIAN_VERSION\}/$d_debian}
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[ "$expanded_runner" = "$expected_runner" ] ||
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die "RUNNER_IMAGE expands to $expanded_runner, expected $expected_runner"
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fi
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if [ $status -eq 0 ]; then
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echo "pins ok: Elixir $d_elixir, OTP $d_otp, Debian $d_debian (mise and Dockerfile agree)"
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echo " builder: $expected_builder"
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echo " runner: $expected_runner"
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echo " (upstream drift of these pins is reported by dokku-updates 'firehose check')"
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else
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echo >&2 "fix mise.toml and/or the Dockerfile ARG pins so they agree, then re-run."
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fi
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exit $status
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