Update cheatsheets

tldr/docker-run

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # docker run
 
 > Run a command in a new Docker container.
-> More information: <https://docs.docker.com/engine/reference/commandline/run/>.
+> More information: <https://docs.docker.com/reference/cli/docker/container/run/>.
 
 - Run command in a new container from a tagged image:
 

tldr/docker-save

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # docker save
 
 > Export Docker images to archive.
-> More information: <https://docs.docker.com/engine/reference/commandline/save/>.
+> More information: <https://docs.docker.com/reference/cli/docker/image/save/>.
 
 - Save an image by redirecting `stdout` to a tar archive:
 

tldr/docker-secret

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # docker secret
 
 > Manage Docker swarm secrets.
-> More information: <https://docs.docker.com/engine/reference/commandline/secret/>.
+> More information: <https://docs.docker.com/reference/cli/docker/secret/>.
 
 - Create a new secret from `stdin`:
 

tldr/linux/secret-tool

@@ -0,0 +1,26 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# secret-tool
+
+> Store and retrieve passwords, part of the `libsecret` package.
+> Communicates with Freedesktop secret service implementations such as `gnome-keyring`.
+> More information: <https://gnome.pages.gitlab.gnome.org/libsecret/>.
+
+- Store a secret with an optional label:
+
+`secret-tool store --label={{label}} {{key}} {{value}}`
+
+- Retrieve a secret:
+
+`secret-tool lookup key {{key}}`
+
+- Get more information about a secret:
+
+`secret-tool search key {{key}}`
+
+- Delete a stored secret:
+
+`secret-tool clear key {{key}}`