Add SPDX license headers and .containerignore#454

Amy-Ra-lph wants to merge 3 commits into

rhel-lightspeed:mainrhel-lightspeed/linux-mcp-server:mainfrom

Amy-Ra-lph:security/spdx-headers-and-containerignoreAmy-Ra-lph/linux-mcp-server:security/spdx-headers-and-containerignoreCopy head branch name to clipboard