add docker and deployment files

.dockerignore

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+.git
+.env
+.env.*
+!.env.example
+terminal-shop-source/
+*.db
+data/
+docs/

Caddyfile

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+api.yourdomain.com {
+    reverse_proxy api:8080
+}

Dockerfile.api

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+FROM golang:alpine AS builder
+WORKDIR /app
+RUN apk add --no-cache gcc musl-dev
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=1 GOOS=linux go build -o api ./api/main.go
+
+FROM alpine:3.21
+RUN apk add --no-cache libc6-compat
+WORKDIR /root/
+COPY --from=builder /app/api .
+CMD ["./api"]

Dockerfile.ssh

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+FROM golang:alpine AS builder
+WORKDIR /app
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -o ssh ./main.go
+
+FROM alpine:3.21
+WORKDIR /root/
+COPY --from=builder /app/ssh .
+CMD TERM=xterm-256color ./ssh

docker-compose.prod.yml

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+services:
+  api:
+    build:
+      context: .
+      dockerfile: Dockerfile.api
+    restart: unless-stopped
+    env_file: .env.prod
+    volumes:
+      - ./data:/data
+    expose:
+      - "8080"
+
+  ssh:
+    build:
+      context: .
+      dockerfile: Dockerfile.ssh
+    restart: unless-stopped
+    env_file: .env.prod
+    ports:
+      - "22:22"
+    volumes:
+      - ./.ssh:/root/.ssh
+    depends_on:
+      - api
+
+  caddy:
+    image: caddy:2-alpine
+    restart: unless-stopped
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./Caddyfile:/etc/caddy/Caddyfile
+      - caddy_data:/data
+      - caddy_config:/config
+    depends_on:
+      - api
+
+volumes:
+  caddy_data:
+  caddy_config: