Add production Docker deployment

Amp-Thread-ID: https://ampcode.com/threads/T-01a02485-5574-707c-bff4-5668d83bee8a
Co-authored-by: Heaust Azure <heaust.azure@gmail.com>

server/deploy-docker.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repository="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)"
+expected_repository="$HOME/yawn"
+
+if [[ "$repository" != "$expected_repository" ]]; then
+    printf 'Expected the repository at %s, found %s\n' "$expected_repository" "$repository" >&2
+    exit 1
+fi
+
+for command in git docker; do
+    if ! command -v "$command" >/dev/null 2>&1; then
+        printf 'Missing required command: %s\n' "$command" >&2
+        exit 1
+    fi
+done
+if ! docker compose version >/dev/null 2>&1; then
+    printf 'Docker Compose v2 is required.\n' >&2
+    exit 1
+fi
+
+cd "$repository"
+
+if [[ "$(git branch --show-current)" != "main" ]]; then
+    printf 'Deployments must run from the main branch.\n' >&2
+    exit 1
+fi
+if [[ -n "$(git status --porcelain --untracked-files=normal)" ]]; then
+    printf 'Refusing to deploy a checkout with local changes.\n' >&2
+    exit 1
+fi
+
+printf 'Updating main...\n'
+git fetch origin main
+fetched="$(git rev-parse FETCH_HEAD)"
+git merge --ff-only "$fetched"
+if [[ "$(git rev-parse HEAD)" != "$fetched" ]]; then
+    printf 'HEAD does not match origin/main after updating.\n' >&2
+    exit 1
+fi
+
+printf 'Building the production image...\n'
+docker compose build --pull yawn
+docker compose up -d --remove-orphans yawn
+
+container="$(docker compose ps -q yawn)"
+if [[ -z "$container" ]]; then
+    printf 'Docker Compose did not create the Yawn container.\n' >&2
+    exit 1
+fi
+
+printf 'Waiting for Yawn to become healthy...\n'
+for _ in {1..60}; do
+    status="$(docker inspect --format '{{if .State.Health}}{{.State.Health.Status}}{{else}}{{.State.Status}}{{end}}' "$container")"
+    case "$status" in
+        healthy)
+            printf 'The Yawn container is healthy.\n'
+            exit 0
+            ;;
+        unhealthy | exited | dead)
+            docker compose logs --tail 50 yawn >&2
+            exit 1
+            ;;
+    esac
+    sleep 2
+done
+
+printf 'Yawn did not become healthy before the timeout.\n' >&2
+docker compose logs --tail 50 yawn >&2
+exit 1