Added guide for 1Password CLI integration.

README.md

@@ -235,3 +235,49 @@ systemctl start vault
 # Unseal the Vault
 VAULT_ADDR=http://127.0.0.1:8200 vault operator unseal
 ```
+
+## 1Password Setup
+
+Install 1Password CLI using the commands below:
+
+```shell
+VERSION="v2.32.0" # I don't know how to get the latest version dynamically
+# Repleace aarch with arm64
+ARCH=${ARCH/aarch64/arm64}
+echo "Installing 1Password CLI version ${VERSION} manually..."
+TMP="/tmp/$(mktemp -d 1password-cli-installtion.XXXXXX)"
+mkdir -p $TMP/extracted
+curl -vsSL "https://cache.agilebits.com/dist/1P/op2/pkg/${VERSION}/op_linux_${ARCH}_${VERSION}.zip" -o $TMP/op.zip
+unzip $TMP/op.zip -d $TMP/extracted
+sudo groupadd -f onepassword-cli
+sudo install -g onepassword-cli $TMP/extracted/op /usr/local/bin/op
+sudo chmod g+s /usr/local/bin/op
+if [[ -d $TMP ]]; then rm -rf $TMP; fi
+```
+
+> **Note:** Adjust the `VERSION` variable to install a different version of the 1Password CLI.
+
+Create a `.vault.env` file in the home directory with the following content:
+
+```shell
+VAULT_ADDR=http://localhost:8200
+VAULT_TOKEN=op://Private/root KMS Koszewscy/password
+```
+
+add the following line to your shell profile (e.g., `~/.bashrc` or `~/.zshrc`):
+
+```shell
+alias op_vault='op run --env-file="$HOME/.vault.env" -- vault'
+```
+
+Run Vault CLI as follows:
+
+```shell
+op_vault token lookup
+```
+
+Eventually, set both `VAULT_ADDR` and `VAULT_TOKEN` environment variables in your shell:
+
+```shell
+export $(cat $HOME/.vault.env | op inject)
+```