validator runs using docker file with correct download parameters

Dockerfile.validator

@@ -0,0 +1,34 @@
+FROM ubuntu:22.04
+
+# Build arguments for release configuration
+ARG RELEASE_BASE_URL=https://github.com/paritytech/polkajam-releases/releases/download/
+ARG RELEASE_VERSION=nightly-2025-11-06
+ARG RELEASE_ARCH=linux-x86_64
+
+# Install runtime dependencies
+RUN apt-get update && apt-get install -y \
+    curl \
+    ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+# Download and install polkajam
+ARG RELEASE_FILE=polkajam-${RELEASE_VERSION}-${RELEASE_ARCH}
+
+RUN curl -L ${RELEASE_BASE_URL}${RELEASE_VERSION}/polkajam-${RELEASE_VERSION}-${RELEASE_ARCH}.tgz -o /tmp/polkajam.tgz
+
+RUN tar -xzf /tmp/polkajam.tgz -C /tmp/
+
+RUN mv /tmp/polkajam-${RELEASE_VERSION}-${RELEASE_ARCH}/polkajam /usr/local/bin/polkajam && \
+    chmod +x /usr/local/bin/polkajam
+
+RUN rm -rf /tmp/polkajam.tgz /tmp/polkajam-${RELEASE_VERSION}-${RELEASE_ARCH}
+
+# Set working directory
+WORKDIR /data
+
+# Expose default ports (if needed)
+# EXPOSE 30333 9944 9615
+
+# Default command (can be overridden in docker-compose)
+ENTRYPOINT ["/usr/local/bin/polkajam"]
+CMD ["--help"]

README.md

@@ -64,10 +64,11 @@ git clone https://github.com/your-org/tart-backend.git
 cd tart-backend
 
 # Start backend + PostgreSQL
-docker-compose up -d
-
+docker compose up -d
+# OR start with a single validator
+docker compose --profile with-validator up
 # View logs
-docker-compose logs -f tart-backend
+docker compose logs -f tart-backend
 
 # API endpoint at http://localhost:8080
 # Telemetry endpoint at tcp://localhost:9000

docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 services:
   # PostgreSQL database
   postgres:
@@ -68,28 +66,28 @@ services:
         condition: service_healthy
     restart: unless-stopped
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
+      test: ["CMD", "curl", "-f", "http://localhost:8080/api/health"]
       interval: 30s
       timeout: 10s
       retries: 3
 
   # Optional: JAM validator node
   jam-validator-0:
-    image: polkajam:latest
+    build:
+      context: .
+      dockerfile: Dockerfile.validator
+      args:
+        - RELEASE_BASE_URL=${RELEASE_BASE_URL:-https://github.com/paritytech/polkajam-releases/releases/download/}
+        - RELEASE_VERSION=${RELEASE_VERSION:-nightly-2025-11-06}
+        - RELEASE_ARCH=${RELEASE_ARCH:-linux-aarch64}
     container_name: jam-validator-0
-    command: >
-      --chain dev
-      run
-      --telemetry tart-backend:9000
-      --dev-validator 0
-      --temp
+    command: ["--chain", "dev", "run", "--telemetry", "tart-backend:9000", "--dev-validator", "0", "--temp"]
     depends_on:
       tart-backend:
         condition: service_healthy
     restart: unless-stopped
     profiles:
       - with-validator
-
 volumes:
   postgres-data:
     driver: local