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Menci
8ce5243eb3
MCP containers spawning child processes (npx, uvx, etc.) left zombies because the Go binary running as PID 1 does not reap orphaned children. Add dumb-init as the entrypoint init process.
44 lines
1.4 KiB
Docker
44 lines
1.4 KiB
Docker
# syntax=docker/dockerfile:1
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FROM scratch AS gomodcache
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FROM --platform=$BUILDPLATFORM golang:1.25-alpine AS build
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WORKDIR /src
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COPY go.mod go.sum ./
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RUN --mount=type=cache,target=/go/pkg/mod \
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--mount=type=bind,from=gomodcache,target=/tmp/gomodcache \
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set -eux; \
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if [ -d /tmp/gomodcache/cache/download ]; then \
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cp -a /tmp/gomodcache/. /go/pkg/mod/; \
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fi; \
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go mod download
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COPY . .
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ARG TARGETARCH
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ARG COMMIT_HASH=unknown
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RUN --mount=type=cache,target=/go/pkg/mod \
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--mount=type=cache,target=/root/.cache/go-build \
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CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH:-amd64} \
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go build -trimpath -ldflags "-s -w -X github.com/memohai/memoh/internal/version.CommitHash=${COMMIT_HASH}" -o /out/mcp ./cmd/mcp
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FROM alpine:latest
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# Base utilities
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RUN apk add --no-cache grep curl bash dumb-init
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# Node.js + npm (provides npx for JS/TS MCP servers)
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RUN apk add --no-cache nodejs npm
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# Python 3 + uv (provides uvx for Python MCP servers)
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RUN apk add --no-cache python3 && \
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curl -LsSf https://astral.sh/uv/install.sh | sh && \
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ln -sf /root/.local/bin/uv /usr/local/bin/uv && \
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ln -sf /root/.local/bin/uvx /usr/local/bin/uvx
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WORKDIR /app
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COPY --from=build /out/mcp /opt/mcp
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COPY cmd/mcp/template /opt/mcp-template
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COPY cmd/mcp/entrypoint.sh /opt/entrypoint.sh
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RUN chmod +x /opt/entrypoint.sh
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ENTRYPOINT ["/usr/bin/dumb-init", "--", "/opt/entrypoint.sh"]
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