feat: Add Dockerfile for building and running the application

go/Dockerfile

@@ -0,0 +1,53 @@
+# Build stage
+FROM golang:1.26-alpine AS builder
+
+# Install build dependencies for CGO (required by webp library)
+RUN apk add --no-cache gcc musl-dev
+
+WORKDIR /app
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download dependencies
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the application with CGO enabled
+RUN CGO_ENABLED=1 GOOS=linux go build -o bin/master ./cmd/master
+
+# Final stage
+FROM alpine:latest
+
+# Install CA certificates for HTTPS and timezone data
+RUN apk add --no-cache ca-certificates tzdata
+
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /app/bin/master /app/master
+
+# Create necessary directories (image build-time)
+RUN mkdir -p /app/data
+
+# Set environment variables
+ENV MASTER_PORT=":8081" \
+	MASTER_DB_PATH="/app/data/eth-scanner.db" \
+	MASTER_LOG_LEVEL="info" \
+	MASTER_SHUTDOWN_TIMEOUT="30s" \
+	MASTER_API_KEY="fd650fd2be06da65234a6ff116288866" \
+	MASTER_TARGET_ADDRESSES="0x000000000000000000000000000000000000dEaD, 0xe968927068902222A7b3173257B476bA935Eff67, 0x9b0c45d46D386cEdD98873168C36efd0DcBa8d46" \
+	MASTER_STALE_JOB_THRESHOLD=604800 \
+	MASTER_CLEANUP_INTERVAL=21600 \
+	WORKER_HISTORY_LIMIT=10000 \
+	WORKER_DAILY_STATS_LIMIT=1000 \
+	WORKER_MONTHLY_STATS_LIMIT=1000 \
+	DASHBOARD_PASSWORD="3a9a7e4d194bd481bf17a09df804f3ca"
+
+# Expose port
+EXPOSE 8081
+
+# Entrypoint will prepare runtime dirs and exec the binary
+ENTRYPOINT ["/app/master"]

go/Makefile

@@ -129,7 +129,6 @@ run-master:
 	WORKER_DAILY_STATS_LIMIT=$(WORKER_DAILY_STATS_LIMIT) \
 	WORKER_MONTHLY_STATS_LIMIT=$(WORKER_MONTHLY_STATS_LIMIT) \
 	DASHBOARD_PASSWORD=$(DASHBOARD_PASSWORD) \
-	MASTER_PORT=$(MASTER_PORT) \
 	go run ./cmd/master
 
 # Run master API server testing the win scenario