STOPSIGNAL documentation states it was introduced in Docker 1.12 when it was introduced in 1.9

[rcjsuen]

According to the 1.9.0 release notes, the STOPSIGNAL instruction was added in that release. However, we incorrectly state in our documentation that it was added in 1.12.

dockerfile-language-service/src/dockerPlainText.ts

Line 24 in b0d4f31

"hoverStopsignal": "Set the system call signal to use to send to the container to exit. Signals can be valid unsigned numbers or a signal name in the SIGNAME format such as SIGKILL.\n\nSince Docker 1.12\n\n",

dockerfile-language-service/src/dockerMarkdown.ts

Line 26 in b0d4f31

"hoverStopsignal": "Set the system call signal to use to send to the container to exit. Signals can be valid unsigned numbers or a signal name in the `SIGNAME` format such as `SIGKILL`.\n\nSince Docker 1.12\n\n",