nxtgauge-backend-rust/Dockerfile.simple
Ashwin Kumar Sivakumar d422139e48
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fix(ci): remove redundant rustup install now that base image already has it
The official rust:alpine base (unlike whatever image the old defunct
registry.nxtgauge.com mirror actually held) already ships a full
rustup-installed toolchain, so the extra `curl rustup.rs | sh` step
now fails with "cannot install while Rust is installed". Drop it and
the /root/.cargo/bin PATH override (the base image already sets PATH
to its own /usr/local/cargo/bin) - just add the musl target, which the
existing rustup binary can do directly.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-07 23:41:31 +05:30

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# Simple fast Dockerfile - no fancy caching, just builds fast
# Uses local cargo cache between builds
ARG SERVICE_NAME
FROM ci.nxtgauge.com/admin/rust:alpine AS builder
ARG SERVICE_NAME
# The official rust:alpine base already provides a full rustup-installed
# toolchain (unlike Alpine's apk-packaged rust, which lacks proc-macro
# support) - just add build deps and the musl target.
RUN apk add --no-cache curl ca-certificates bash build-base musl-dev pkgconfig openssl-dev openssl-libs-static
RUN update-ca-certificates
RUN rustup target add x86_64-unknown-linux-musl
WORKDIR /app
# Copy manifests first for better caching
COPY Cargo.toml Cargo.lock ./
COPY crates/ ./crates/
# Copy all services so we can map hyphenated service names to underscore crate/bin names.
COPY apps/ ./apps/
# Restrict workspace members to the selected service + shared crates.
# This avoids requiring every `apps/*` manifest while preserving workspace deps.
RUN svc=$(echo "${SERVICE_NAME}" | tr '-' '_') && \
awk -v svc="${svc}" '\
BEGIN { in_members = 0 } \
/^members = \[/ { \
print "members = ["; \
print " \"apps/" svc "\","; \
print " \"crates/contracts\","; \
print " \"crates/db\","; \
print " \"crates/auth\","; \
print " \"crates/storage\","; \
print " \"crates/cache\","; \
print " \"crates/email\""; \
in_members = 1; \
next; \
} \
in_members && /^\]/ { in_members = 0; print "]"; next } \
in_members { next } \
{ print }' Cargo.toml > Cargo.toml.tmp && mv Cargo.toml.tmp Cargo.toml && \
echo "${svc}" > /tmp/service_bin
# Build with all optimizations
ENV RUSTFLAGS="-C target-feature=+crt-static -C link-arg=-s"
ENV OPENSSL_STATIC=1
ENV OPENSSL_DIR=/usr
RUN cargo build --release \
--bin $(cat /tmp/service_bin) \
--target x86_64-unknown-linux-musl && \
cp /app/target/x86_64-unknown-linux-musl/release/$(cat /tmp/service_bin) /app/service
# Runtime
FROM scratch
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=builder /app/service /app/service
USER 65532:65532
EXPOSE 8000
ENTRYPOINT ["/app/service"]