Add dockerfile

.dockerignore

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+/dist
+/node_modules

Caddyfile

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+# global options
+{
+    admin off # theres no need for the admin api in railway's environment
+    persist_config off # storage isn't persistent anyway
+    auto_https off # railway handles https for us, this would cause issues if left enabled
+    log { # runtime logs
+        format console # set runtime log format to console mode
+    }
+}
+
+:3000 {
+    log { # access logs
+        format console # set access log format to console mode
+    }
+
+    # health check for railway
+    respond /health 200
+
+    # serve from the 'dist' folder (Vite builds into the 'dist' folder)
+    root * /app/dist
+
+    # enable gzipping responses
+    encode gzip
+
+    # serve files from 'dist'
+    file_server
+
+    # if path doesn't exist, redirect it to 'index.html' for client side routing
+    try_files {path} /index.html
+}

Dockerfile

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+# syntax=docker/dockerfile:1
+
+FROM oven/bun:1 AS deps
+WORKDIR /app
+COPY package.json package.json
+COPY bun.lockb bun.lockb
+RUN bun install
+
+FROM node:18-alpine AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+RUN yarn build
+
+FROM caddy AS runner
+COPY --from=builder /app/dist /usr/share/caddy