fix: Restore CGO_ENABLED=0 for static linking in Dockerfile (#7397)

This reverts part of commit 42272a2 which removed CGO_ENABLED=0.
The flag is necessary to ensure all dependencies are statically linked
during the build process, preventing runtime dependencies on host system
C libraries.

Co-authored-by: Rui Araújo Gomes <rui.araujo@checkmarx.com>
Co-authored-by: Artur Ribeiro <artur.ribeiro@checkmarx.com>

Author: 3 people

Dockerfile

@@ -21,7 +21,7 @@ RUN go mod download -x
 COPY . .
 
 # Build the Go app
-RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build \
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build \
     -ldflags "-s -w -X github.com/Checkmarx/kics/v2/internal/constants.Version=${VERSION} -X github.com/Checkmarx/kics/v2/internal/constants.SCMCommit=${COMMIT} -X github.com/Checkmarx/kics/v2/internal/constants.SentryDSN=${SENTRY_DSN} -X github.com/Checkmarx/kics/v2/internal/constants.BaseURL=${DESCRIPTIONS_URL}" \
     -a -installsuffix cgo \
     -o bin/kics cmd/console/main.go