Add containerization support with Red Hat UBI9 images

- Add Containerfile using UBI9 go-toolset for build and ubi-minimal for runtime
- Add container-build, container-run, and container-clean make targets using podman
- Update go.mod to use Go 1.24.4 for UBI9 compatibility
- Container runs SSE transport on port 8080 with verbose logging

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: tiwillia

Containerfile

@@ -0,0 +1,47 @@
+# Build stage using UBI9 Go toolset
+FROM registry.access.redhat.com/ubi9/go-toolset:latest AS builder
+
+# Switch to root to install dependencies
+USER 0
+
+# 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 the binary
+RUN go build -o rosa-mcp-server ./cmd/rosa-mcp-server
+
+# Runtime stage using minimal UBI9
+FROM registry.access.redhat.com/ubi9/ubi-minimal:latest
+
+# Install ca-certificates for HTTPS requests to OCM
+RUN microdnf install -y ca-certificates && microdnf clean all
+
+# Create non-root user
+RUN groupadd -r rosa && useradd -r -g rosa rosa
+
+# Set working directory
+WORKDIR /app
+
+# Copy binary from builder stage
+COPY --from=builder /app/rosa-mcp-server .
+
+# Change ownership to non-root user
+RUN chown rosa:rosa /app/rosa-mcp-server
+
+# Switch to non-root user
+USER rosa
+
+# Expose port 8080 for SSE transport
+EXPOSE 8080
+
+# Default command runs with SSE transport on port 8080
+CMD ["./rosa-mcp-server", "--transport=sse", "--port=8080"]

Makefile

@@ -1,4 +1,4 @@
-.PHONY: build run clean
+.PHONY: build run clean container-build container-run container-clean
 
 # Build the rosa-mcp-server binary
 build:
@@ -11,3 +11,16 @@ run: build
 # Clean build artifacts
 clean:
 	rm -f rosa-mcp-server
+
+# Build container image
+container-build:
+	podman build -t rosa-mcp-server:latest .
+
+# Run container with SSE transport and verbose logging
+container-run: container-build
+	podman run --rm -p 8080:8080 \
+		rosa-mcp-server:latest ./rosa-mcp-server --transport=sse --port=8080 -v=3
+
+# Clean container image
+container-clean:
+	podman rmi rosa-mcp-server:latest

go.mod

@@ -1,6 +1,6 @@
 module github.com/tiwillia/rosa-mcp-go
 
-go 1.24.5
+go 1.24.4
 
 require (
 	github.com/BurntSushi/toml v1.5.0