Dockerfile

# Build stage
FROM golang:1.24-alpine AS builder

# Install build dependencies
RUN apk add --no-cache git ca-certificates tzdata

# Set working directory
WORKDIR /app

# Copy go mod files
COPY go.mod go.sum ./

# Download dependencies
RUN go mod download

# Copy source code
COPY . .

# Build arguments for version info
ARG VERSION=dev
ARG COMMIT=unknown
ARG BUILD_DATE=unknown

# Build the binary
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
    -ldflags="-w -s -X main.Version=${VERSION} -X main.Commit=${COMMIT} -X main.BuildDate=${BUILD_DATE}" \
    -o /app/bin/mcp-notify \
    ./cmd/mcp-notify

# Build CLI
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
    -ldflags="-w -s -X main.Version=${VERSION} -X main.Commit=${COMMIT} -X main.BuildDate=${BUILD_DATE}" \
    -o /app/bin/mcp-notify-cli \
    ./cmd/mcp-notify-cli

# Final stage
FROM alpine:3.19

# Install runtime dependencies
RUN apk add --no-cache ca-certificates tzdata

# Create non-root user
RUN addgroup -g 1000 appgroup && \
    adduser -u 1000 -G appgroup -s /bin/sh -D appuser

# Set working directory
WORKDIR /app

# Copy binaries from builder
COPY --from=builder /app/bin/mcp-notify /app/mcp-notify
COPY --from=builder /app/bin/mcp-notify-cli /app/mcp-notify-cli

# Copy config template as default config (env vars will override)
COPY config.example.yaml /app/config.yaml

# Set ownership
RUN chown -R appuser:appgroup /app

# Switch to non-root user
USER appuser

# Expose ports
EXPOSE 8080 9090

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:8080/health || exit 1

# Default command
ENTRYPOINT ["/app/mcp-notify"]
CMD ["--config", "/app/config.yaml"]