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security: hardened OCI #1

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18 changes: 2 additions & 16 deletions Dockerfile
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
# Multi-stage build for optimal image size
FROM golang:1.24.1-alpine AS builder
FROM golang:1.25.5-alpine AS builder

# Set working directory
WORKDIR /app
Expand All @@ -17,28 +17,14 @@ COPY *.go ./
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o wotrlay .

# Final stage: minimal runtime image
FROM alpine:3.20

# Install ca-certificates for HTTPS requests
RUN apk --no-cache add ca-certificates

# Create non-root user
RUN addgroup -g 1001 -S appgroup && \
adduser -u 1001 -S appuser -G appgroup
FROM scratch

# Set working directory
WORKDIR /app

# Copy binary from builder stage
COPY --from=builder /app/wotrlay .

# Create data directory for Badger DB (will be in /app/badger due to WORKDIR)
RUN mkdir -p /app/badger && \
chown -R appuser:appgroup /app/badger

# Switch to non-root user
USER appuser

# Expose port
EXPOSE 3334

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