Build payjoin-directory with Docker

Include a docker-compose.yml template to run
- payjoin-directory
- redis
- nginx
- certbot

in a valid configuration.

Close #143

payjoin-directory/Dockerfile

@@ -0,0 +1,37 @@
+# Use the official Rust image as the builder
+FROM --platform=linux/amd64 rust:1.75-slim as builder
+
+WORKDIR /usr/src/payjoin-directory
+
+# Install cross-compilation dependencies
+RUN apt-get update && \
+    apt-get install -y \
+    build-essential \
+    musl-tools \
+    musl-dev \
+    pkg-config \
+    gcc-multilib \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set the linker
+ENV CC_x86_64_unknown_linux_musl=musl-gcc
+ENV AR_x86_64_unknown_linux_musl=ar
+
+# Add the x86_64-unknown-linux-musl target
+RUN rustup target add x86_64-unknown-linux-musl
+
+# Copy the manifest and source code
+COPY payjoin-directory/Cargo.toml ./
+COPY payjoin-directory/src/ ./src/
+
+# Build the binary
+RUN cargo build --release --target x86_64-unknown-linux-musl
+
+# Create final minimal image
+FROM --platform=linux/amd64 alpine:latest
+
+# Copy the binary from builder
+COPY --from=builder /usr/src/payjoin-directory/target/x86_64-unknown-linux-musl/release/payjoin-directory ./
+
+# Run the binary
+ENTRYPOINT ["./payjoin-directory"]

payjoin-directory/docker-compose.yml

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+version: '3.8'
+
+services:
+  nginx:
+    image: nginx:latest
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./nginx/logs:/var/log/nginx
+      - ./nginx/conf.d:/etc/nginx/conf.d
+      - ./nginx/certs:/etc/ssl/certs
+      - ./nginx/html:/var/www/html
+    networks:
+      - payjoin-network
+
+  certbot:
+    image: certbot/certbot
+    volumes:
+      - ./nginx/certs:/etc/letsencrypt
+      - ./nginx/html:/var/www/html
+    entrypoint: /bin/sh -c 'trap exit TERM; while :; do certbot renew --webroot -w /var/www/html --deploy-hook "nginx -s reload"; sleep 12h & wait $${!}; done;'
+    depends_on:
+      - nginx
+    networks:
+      - payjoin-network
+
+  payjoin-directory:
+    image: dangould/payjoin-directory:0.0.1-rc0
+    environment:
+      RUST_LOG: "trace"
+      PJ_DB_HOST: "redis:6379"
+      PJ_DIR_PORT: "8080"
+    ports:
+      - "8080:8080"
+    depends_on:
+      - redis
+    networks:
+      - payjoin-network
+
+  redis:
+    image: redis:latest
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis-data:/data
+    networks:
+      - payjoin-network
+
+networks:
+  payjoin-network:
+    driver: bridge
+
+volumes:
+  redis-data: