diff --git a/conf/bitcoin.conf b/conf/bitcoin.conf
index 350bd273..e40d2073 100644
--- a/conf/bitcoin.conf
+++ b/conf/bitcoin.conf
@@ -14,7 +14,9 @@ proxy=4nk-tor:9050
 listen=1
 
 # Paramètres RPC
-rpcallowip=172.24.0.0/16
+rpcuser=bitcoin
+rpcpassword=bitcoin
+rpcallowip=192.168.240.0/20
 rpcworkqueue=32
 rpcthreads=4
 rpcdoccheck=1
@@ -37,6 +39,8 @@ addnode=d6i546e2sjezhyy2eupyc2wqtbgjnkubcjd4prhqurtlmp7nsp6yxqyd.onion:38333
 port=38333
 rpcport=38332
 rpcbind=0.0.0.0
+rpcuser=bitcoin
+rpcpassword=bitcoin
 
 fallbackfee=0.0001
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 30eaf1e2..4e7238c1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -37,7 +37,6 @@ services:
       - "8000:8000"
 
     environment:
-      - RPC_ENDPOINT=http://4nk-bitcoin:38332
       - HOST=0.0.0.0:8000
       - CHAIN=signet
       - SYNC_START_HEIGHT=1
@@ -49,6 +48,8 @@ services:
       - TWEAKS_CUT_THROUGH_WITH_DUST_FILTER=1
     command: ["/main", "--datadir", "/blindbit"]
     working_dir: /
+    volumes:
+      - ./conf/blindbit.toml:/blindbit/blindbit.toml:ro
     networks:
       - 4nk_network
     restart: unless-stopped
@@ -80,14 +81,54 @@ services:
       retries: 3
       start_period: 40s
 
-  sdk_relay:
+  sdk_relay1:
     image: 4nk-node-sdk_relay1:docker-support-v2
-    container_name: 4nk-sdk-relay
+    container_name: 4nk-sdk-relay1
     ports:
       - "8090:8090"
       - "8091:8091"
     volumes:
-      - ./conf/sdk_relay1.conf:/usr/local/bin/sdk_relay.conf:ro
+      - ./conf/sdk_relay1.conf:/home/bitcoin/.conf:ro
+    networks:
+      - 4nk_network
+    restart: unless-stopped
+    depends_on:
+      - sdk_storage
+    healthcheck:
+      test: ["CMD", "wget", "--quiet", "--tries=1", "--timeout=5", "--spider", "http://localhost:8091"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
+  sdk_relay2:
+    image: 4nk-node-sdk_relay2:docker-support-v2
+    container_name: 4nk-sdk-relay2
+    ports:
+      - "8092:8090"
+      - "8093:8091"
+    volumes:
+      - ./conf/sdk_relay2.conf:/home/bitcoin/.conf:ro
+    networks:
+      - 4nk_network
+    restart: unless-stopped
+    depends_on:
+      - sdk_storage
+    healthcheck:
+      test: ["CMD", "wget", "--quiet", "--tries=1", "--timeout=5", "--spider", "http://localhost:8091"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+
+  sdk_relay3:
+    image: 4nk-node-sdk_relay3:docker-support-v2
+    container_name: 4nk-sdk-relay3
+    ports:
+      - "8094:8090"
+      - "8095:8091"
+    volumes:
+      - ./conf/sdk_relay3.conf:/home/bitcoin/.conf:ro
     networks:
       - 4nk_network
     restart: unless-stopped
@@ -107,11 +148,14 @@ services:
       - "9090:9090"
     volumes:
       - ./conf/sdk_signer.conf:/usr/local/bin/sdk_signer.conf:ro
+      - sdk_signer_data:/app/data
     networks:
       - 4nk_network
     restart: unless-stopped
     depends_on:
-      - sdk_relay
+      - sdk_relay1
+      - sdk_relay2
+      - sdk_relay3
     healthcheck:
       test: ["CMD", "wget", "--quiet", "--tries=1", "--timeout=5", "--spider", "http://localhost:9090"]
       interval: 30s
@@ -140,6 +184,7 @@ services:
 volumes:
   tor_data:
   bitcoin_data:
+  sdk_signer_data:
 
 networks:
   4nk_network:
diff --git a/modules/sdk_relay1/Dockerfile b/modules/sdk_relay1/Dockerfile
index 96eb3772..1be41c16 100644
--- a/modules/sdk_relay1/Dockerfile
+++ b/modules/sdk_relay1/Dockerfile
@@ -1 +1,46 @@
 FROM rust:1.75-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache musl-dev openssl-dev
+
+# Set working directory
+WORKDIR /app
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN cargo build --release
+
+# Runtime stage
+FROM alpine:latest
+
+# Install runtime dependencies
+RUN apk add --no-cache libgcc
+
+# Create app user
+RUN addgroup -g 1001 appuser && adduser -D -s /bin/sh -u 1001 -G appuser appuser
+
+# Set working directory
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /app/target/release/sdk_relay /usr/local/bin/sdk_relay
+
+# Configuration file will be mounted via docker-compose
+
+# Set permissions
+RUN chown -R appuser:appuser /app
+
+# Switch to app user
+USER appuser
+
+# Expose ports
+EXPOSE 8090 8091
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD wget --quiet --tries=1 --timeout=5 --spider http://localhost:8091 || exit 1
+
+# Run the application
+CMD ["/usr/local/bin/sdk_relay"]
diff --git a/modules/sdk_relay2/Dockerfile b/modules/sdk_relay2/Dockerfile
index 96eb3772..1be41c16 100644
--- a/modules/sdk_relay2/Dockerfile
+++ b/modules/sdk_relay2/Dockerfile
@@ -1 +1,46 @@
 FROM rust:1.75-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache musl-dev openssl-dev
+
+# Set working directory
+WORKDIR /app
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN cargo build --release
+
+# Runtime stage
+FROM alpine:latest
+
+# Install runtime dependencies
+RUN apk add --no-cache libgcc
+
+# Create app user
+RUN addgroup -g 1001 appuser && adduser -D -s /bin/sh -u 1001 -G appuser appuser
+
+# Set working directory
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /app/target/release/sdk_relay /usr/local/bin/sdk_relay
+
+# Configuration file will be mounted via docker-compose
+
+# Set permissions
+RUN chown -R appuser:appuser /app
+
+# Switch to app user
+USER appuser
+
+# Expose ports
+EXPOSE 8090 8091
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD wget --quiet --tries=1 --timeout=5 --spider http://localhost:8091 || exit 1
+
+# Run the application
+CMD ["/usr/local/bin/sdk_relay"]
diff --git a/modules/sdk_relay3/Dockerfile b/modules/sdk_relay3/Dockerfile
index 96eb3772..1be41c16 100644
--- a/modules/sdk_relay3/Dockerfile
+++ b/modules/sdk_relay3/Dockerfile
@@ -1 +1,46 @@
 FROM rust:1.75-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache musl-dev openssl-dev
+
+# Set working directory
+WORKDIR /app
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN cargo build --release
+
+# Runtime stage
+FROM alpine:latest
+
+# Install runtime dependencies
+RUN apk add --no-cache libgcc
+
+# Create app user
+RUN addgroup -g 1001 appuser && adduser -D -s /bin/sh -u 1001 -G appuser appuser
+
+# Set working directory
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /app/target/release/sdk_relay /usr/local/bin/sdk_relay
+
+# Configuration file will be mounted via docker-compose
+
+# Set permissions
+RUN chown -R appuser:appuser /app
+
+# Switch to app user
+USER appuser
+
+# Expose ports
+EXPOSE 8090 8091
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD wget --quiet --tries=1 --timeout=5 --spider http://localhost:8091 || exit 1
+
+# Run the application
+CMD ["/usr/local/bin/sdk_relay"]