Add Konflux Dockerfile and adjust config

Author: mtodor

.tekton/acs-mcp-server-pull-request.yaml

@@ -28,7 +28,7 @@ spec:
   - name: image-expires-after
     value: 5d
   - name: dockerfile
-    value: Dockerfile
+    value: konflux.Dockerfile
   pipelineSpec:
     description: |
       This pipeline is ideal for building container images from a Containerfile while maintaining trust after pipeline customization.

.tekton/acs-mcp-server-push.yaml

@@ -25,7 +25,7 @@ spec:
   - name: output-image
     value: quay.io/redhat-user-workloads/rh-acs-tenant/acs-mcp-server:{{revision}}
   - name: dockerfile
-    value: Dockerfile
+    value: konflux.Dockerfile
   pipelineSpec:
     description: |
       This pipeline is ideal for building container images from a Containerfile while maintaining trust after pipeline customization.

konflux.Dockerfile

@@ -0,0 +1,65 @@
+# Multi-stage Dockerfile for ACS MCP Server build on Konflux
+
+# Stage 1: Builder - Build the Go binary
+FROM brew.registry.redhat.io/rh-osbs/openshift-golang-builder:rhel_9_golang_1.25@sha256:bd531796aacb86e4f97443797262680fbf36ca048717c00b6f4248465e1a7c0c AS builder
+
+# Build arguments for application version and branding
+ARG VERSION=dev
+ARG SERVER_NAME="acs-mcp-server"
+ARG PRODUCT_DISPLAY_NAME="Red Hat Advanced Cluster Security (ACS)"
+
+# Set working directory
+WORKDIR /workspace
+
+# Copy go module files first for better layer caching
+COPY go.mod go.sum ./
+
+# Download dependencies (cached layer)
+RUN go mod download
+
+# Copy source code
+COPY . .
+
+# Build the binary with optimizations
+# Output to "/tmp" directory, because user can not copy built binary to "/workspace"
+# Go build uses "venodr" mode and that fails, that's why explicit "-mod=mod" is set.
+RUN RACE=0 CGO_ENABLED=0 GOOS=$(go env GOOS) GOARCH=$(go env GOARCH) \
+    go build \
+    -mod=mod \
+    -ldflags="-w -s \
+      -X 'github.com/stackrox/stackrox-mcp/internal/config.version=${VERSION}' \
+      -X 'github.com/stackrox/stackrox-mcp/internal/config.serverName=${SERVER_NAME}' \
+      -X 'github.com/stackrox/stackrox-mcp/internal/config.productDisplayName=${PRODUCT_DISPLAY_NAME}'" \
+    -trimpath \
+    -o /tmp/stackrox-mcp \
+    ./cmd/stackrox-mcp
+
+# Stage 2: Runtime - Minimal runtime image
+FROM registry.access.redhat.com/ubi9/ubi-micro@sha256:093a704be0eaef9bb52d9bc0219c67ee9db13c2e797da400ddb5d5ae6849fa10
+
+# Set default environment variables
+ENV LOG_LEVEL=INFO
+
+# Set working directory
+WORKDIR /app
+
+# Copy trusted certificates from builder
+COPY --from=builder /etc/pki/ca-trust/extracted/ /etc/pki/ca-trust/extracted/
+COPY --from=builder /etc/ssl/certs/ /etc/ssl/certs/
+
+# Copy binary from builder
+COPY --from=builder /tmp/stackrox-mcp /app/stackrox-mcp
+
+# Set ownership for OpenShift arbitrary UID support
+# Files owned by 4000, group 0 (root), with group permissions matching user
+RUN chown -R 4000:0 /app && \
+    chmod -R g=u /app
+
+# Switch to non-root user (can be overridden by OpenShift SCC)
+USER 4000
+
+# Expose port for MCP server
+EXPOSE 8080
+
+# Run the application
+ENTRYPOINT ["/app/stackrox-mcp"]