feat: add release build scripts

.gitignore

@@ -1,3 +1,4 @@
 *.exe
 .env
 /disco
+/dist

justfile

@@ -0,0 +1,10 @@
+default:
+  just --list
+
+version := "1"
+
+build *ARGS:
+  ./release/build.sh "{{ARGS}}"
+
+clean:
+  rm -rf ./dist

release/build.sh

@@ -0,0 +1,146 @@
+#!/usr/bin/env bash
+set -eEuo pipefail
+
+# Build Disco binaries for Linux, macOS and Windows, packaging them in their
+# platform-native formats.
+# Based on https://github.com/grafana/k6/blob/v0.50.0/build-release.sh
+
+
+eval "$(go env)"
+
+_bin_name="disco"
+_proj_dir="$(git rev-parse --show-toplevel)"
+
+# Arguments
+_platforms="${1:-linux macos windows}"
+_version="${2:-$(git describe --tags --abbrev=10 --always --dirty)}"
+_dest_dir="${3-${_proj_dir}/dist}"
+
+build() {
+  declare _env="$1"  # comma-separated environment variables
+  declare -n _path="$2"
+
+  # Backup original environment, and export the received one.
+  declare -A _orig_env
+  declare _old_ifs=$IFS
+  IFS=','
+  for _env_pair in $_env; do
+    IFS='=' read -r _key _value <<< "$_env_pair"
+    _orig_env["$_key"]="$(eval echo "\$$_key")"
+    export "${_key}=${_value}"
+  done
+  IFS=$_old_ifs
+
+  declare _os="$GOOS"
+  if [ "$GOOS" = "darwin" ]; then
+    _os="macos"
+  fi
+
+  declare _name="${_bin_name}-${_version}-${_os}-${GOARCH}"
+  # Set return value
+  _path="${_dest_dir}/${_name}"
+  mkdir -p "$_path"
+
+  declare _suffix=""
+  if [ "$GOOS" = "windows" ]; then
+    _suffix=".exe"
+  fi
+
+  declare _build_args=(
+    -o "${_path}/${_bin_name}${_suffix}" -trimpath
+  )
+
+  if [ -n "$_version" ]; then
+    _build_args+=(-ldflags "-X go.hackfix.me/disco/app/context.vcsVersion=${_version}")
+  fi
+
+  log "Building\t${_name}"
+  go build "${_build_args[@]}" "${_proj_dir}/cmd/${_bin_name}"
+
+  # Restore original environment
+  for _key in "${!_orig_env[@]}"; do
+    export "$_key=${_orig_env[$_key]}"
+  done
+}
+
+package() {
+  declare _path="$1" _fmt="$2" _name="$(basename "$1")"
+
+  log "Packaging\t${_name}.${_fmt}"
+
+  case $_fmt in
+  deb|rpm)
+    # nfpm can't substitute env vars in file paths, so we have to cd...
+    cd "$_path"
+    set -x
+    nfpm package --config ../../packaging/nfpm.yaml --packager "${_fmt}" \
+      --target "../${_name}.${_fmt}"
+    set +x
+    cd -
+    ;;
+  tgz)
+    tar -C "${_dest_dir}" -zcf "${_path}.tar.gz" "$_name"
+    ;;
+  zip)
+    (cd "${_dest_dir}" && zip -rq9 "${_path}.zip" "$_name")
+    ;;
+  *)
+    quit "Unknown format: $_fmt"
+    ;;
+  esac
+}
+
+log() {
+  echo -e "$(date -Iseconds)" "$*"
+}
+
+err() {
+  echo -e "ERROR:" "$*"
+}
+
+quit() {
+  err "$*"
+  exit 1
+}
+
+cleanup() {
+  find "$_dest_dir" -mindepth 1 -maxdepth 1 -type d -exec rm -rf {} \;
+  log "Cleaned ${_dest_dir}"
+}
+[ -z "${NO_CLEANUP-}" ] && trap cleanup EXIT
+
+build_release() {
+  log "Building release ${_version} in ${_dest_dir}"
+  export CGO_ENABLED=0
+
+  for _pf in $_platforms; do
+    IFS='-' read -r _goos _goarch <<< "$_pf"
+    case "$_pf" in
+      linux*)
+        if [ "$_goarch" = "amd64" ] || [ "$_pf" = "linux" ]; then
+          build GOOS=linux,GOARCH=amd64 _build_path
+          package "$_build_path" "tgz"
+        fi
+        if [ "$_goarch" = "arm64" ] || [ "$_pf" = "linux" ]; then
+          build GOOS=linux,GOARCH=arm64 _build_path
+          package "$_build_path" "tgz"
+        fi
+        ;;
+      macos*)
+        if [ "$_goarch" = "arm64" ] || [ "$_pf" = "macos" ]; then
+          build GOOS=darwin,GOARCH=arm64 _build_path
+          package "$_build_path" "zip"
+        fi
+        ;;
+      windows*)
+        build GOOS=windows,GOARCH=amd64 _build_path
+        package "$_build_path" "zip"
+        ;;
+      *)
+        quit "invalid platform: ${_pf}"
+        ;;
+    esac
+  done
+}
+
+build_release "$_platforms"

release/nfpm.yaml

@@ -0,0 +1,21 @@
+name: "disco"
+arch: "${GOARCH}"
+platform: "linux"
+version: "${VERSION}"
+version_schema: semver
+section: "default"
+maintainer: "hackFIXME"
+description: |
+  A distributed configuration and secrets manager.
+depends:
+- ca-certificates
+homepage: "https://go.hackfix.me/disco"
+license: "AGPL-3.0"
+contents:
+- src: ./disco
+  dst: /usr/bin/disco
+
+deb:
+  compression: xz
+  fields:
+    Bugs: https://github.com/hackfixme/disco/issues