Graham McIntire
824f4388eb
The agent now checks for updates every hour and automatically updates itself when a new version is available on Docker Hub. Features: - Periodic update checks (hourly via scheduler) - Automatic Docker image pull when update available - Graceful exit and restart with new version - Non-blocking, runs in background task - Requires Docker socket mount for self-update Changes: - Add UpdateInfo struct and get_update_info() function - Add perform_self_update() to pull new image and restart - Add update check ticker to scheduler (hourly) - Include docker-cli in Dockerfile runtime stage - Update docker-compose.example.yml with socket mount - Update README and CLAUDE.md with auto-update docs The agent will log update status: - "Already running latest version" - no action - "Performing self-update: X -> Y" - pulling new image - "Exiting to allow restart with new version" - restarting Requires: - Docker socket mounted: /var/run/docker.sock:/var/run/docker.sock - restart: unless-stopped in docker-compose (to restart after exit)
73 lines
2 KiB
Docker
73 lines
2 KiB
Docker
# Build stage
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FROM rust:1.83-alpine AS builder
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# Build arguments provided by Docker buildx
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ARG TARGETPLATFORM
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WORKDIR /app
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# Install build dependencies
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RUN apk add --no-cache musl-dev protobuf-dev
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# Determine Rust target based on platform and add it
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RUN case "$TARGETPLATFORM" in \
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"linux/amd64") RUST_TARGET="x86_64-unknown-linux-musl" ;; \
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"linux/arm64") RUST_TARGET="aarch64-unknown-linux-musl" ;; \
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*) echo "Unsupported platform: $TARGETPLATFORM" && exit 1 ;; \
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esac && \
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echo "$RUST_TARGET" > /tmp/rust-target && \
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rustup target add "$RUST_TARGET"
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# Copy manifests and build files
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COPY Cargo.toml Cargo.lock build.rs ./
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COPY proto ./proto
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# Create a dummy main.rs to build dependencies
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RUN mkdir src && echo "fn main() {}" > src/main.rs
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# Build dependencies (cached layer)
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RUN RUST_TARGET=$(cat /tmp/rust-target) && \
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cargo build --release --target "$RUST_TARGET"
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# Remove dummy src
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RUN rm -rf src
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# Copy actual source code
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COPY src ./src
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# Build the actual application
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RUN RUST_TARGET=$(cat /tmp/rust-target) && \
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touch src/main.rs && \
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cargo build --release --target "$RUST_TARGET" && \
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cp "target/$RUST_TARGET/release/towerops-agent" /tmp/towerops-agent
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# Runtime stage
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FROM alpine:3.19
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# Install runtime dependencies
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# docker-cli is needed for self-update functionality
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RUN apk add --no-cache ca-certificates su-exec docker-cli
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# Create data directory
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RUN mkdir -p /data
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# Copy binary from builder
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COPY --from=builder /tmp/towerops-agent /usr/local/bin/towerops-agent
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# Copy entrypoint script
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COPY entrypoint.sh /usr/local/bin/entrypoint.sh
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RUN chmod +x /usr/local/bin/entrypoint.sh
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# Volume for database
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VOLUME ["/data"]
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# Health check
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HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
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CMD test -f /data/towerops-agent.db || exit 1
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# Create non-root user (entrypoint will drop to this user)
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RUN addgroup -g 1000 towerops && \
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adduser -D -u 1000 -G towerops towerops
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# Start as root, entrypoint will fix permissions and drop to towerops user
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ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
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