Add install-vault.md

install-vault.md

@@ -0,0 +1,34 @@
+On AlmaLinux 10, use `dnf`. AlmaLinux 10 still uses DNF 4, so the HashiCorp/RHEL instructions translate cleanly. RHEL 10 documentation also uses `dnf` for package and repository management. :chatgpt-content-reference{index="0"}
+
+For the Vault Enterprise install shown in your screenshot:
+
+```bash
+# Install repository-management tools
+sudo dnf install -y dnf-plugins-core
+
+# Add the official HashiCorp RHEL repository
+sudo dnf config-manager --add-repo https://rpm.releases.hashicorp.com/RHEL/hashicorp.repo
+
+# Install Vault Enterprise
+sudo dnf install -y vault
+```
+
+You can verify that the repository was added:
+
+```bash
+dnf repolist | grep -i hashicorp
+```
+
+And verify Vault:
+
+```bash
+vault version
+```
+
+So the screenshot effectively becomes:
+
+```text
+yum install              → dnf install
+yum-config-manager       → dnf config-manager
+yum -y install ...       → dnf install -y ...
+```