diff --git a/README.md b/README.md
old mode 100755
new mode 100644
index ab4ee4a..0dc678f
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ This Repository **Boilerplates** is my personal template collection. Here you'll
 
 > :warning: Be aware, products can change over time. I do my best to keep up with the latest changes and releases, but please understand that this won’t always be the case.
 
-I created them as free resources to be used in your specific use cases. If you're searching for detailed, in-depth tutorials on some tools or technologies, check out my YouTube Channel: [Christian Lempa](https://www.youtube.com/@christianlempa).
+I created them as free resources to be used in your specific use cases. If you're searching for detailed, in-depth tutorials on some tools or technologies, check out my YouTube Channel: [Christian Lempa](https://www.youtube.com/channel/UCZNhwA1B5YqiY1nLzmM0ZRg).
 
 ## Contribution
 
diff --git a/docker-compose/passbolt/docker-compose.yml b/docker-compose/passbolt/docker-compose.yml
new file mode 100644
index 0000000..22096bf
--- /dev/null
+++ b/docker-compose/passbolt/docker-compose.yml
@@ -0,0 +1,42 @@
+version: '3.9'
+
+volumes:
+  passbolt-db:
+  passbolt-data-gpg:
+  passbolt-data-jwt:
+
+services:
+  passbolt-db:
+    container_name: passbolt-db
+    image: mariadb:10.3
+    restart: unless-stopped
+    environment:
+      - MYSQL_RANDOM_ROOT_PASSWORD=true
+      - MYSQL_DATABASE=$PASSBOLT_DB_NAME
+      - MYSQL_USER=$PASSBOLT_DB_USER
+      - MYSQL_PASSWORD=$PASSBOLT_DB_PASS
+    volumes:
+      - passbolt-db:/var/lib/mysql
+
+  passbolt:
+    container_name: passbolt-app
+    image: passbolt/passbolt:latest-ce
+    restart: unless-stopped
+    depends_on:
+      - passbolt-db
+    environment:
+      - APP_FULL_BASE_URL=https://passbolt.domain.tld
+      - DATASOURCES_DEFAULT_HOST=passbolt-db
+      - DATASOURCES_DEFAULT_USERNAME=$PASSBOLT_DB_USER
+      - DATASOURCES_DEFAULT_PASSWORD=$PASSBOLT_DB_PASS
+      - DATASOURCES_DEFAULT_DATABASE=$PASSBOLT_DB_NAME
+      - EMAIL_TRANSPORT_DEFAULT_HOST=your-mail-server
+      - EMAIL_TRANSPORT_DEFAULT_PORT=587
+      - EMAIL_TRANSPORT_DEFAULT_USERNAME=$EMAIL_TRANSPORT_DEFAULT_USERNAME
+      - EMAIL_TRANSPORT_DEFAULT_PASSWORD=$EMAIL_TRANSPORT_DEFAULT_PASSWORD
+      - EMAIL_TRANSPORT_DEFAULT_TLS=true
+      - EMAIL_DEFAULT_FROM=no-reply@domain.tld
+    volumes:
+      - passbolt-data-gpg:/etc/passbolt/gpg
+      - passbolt-data-jwt:/etc/passbolt/jwt
+    command: ["/usr/bin/wait-for.sh", "-t", "0", "db:3306", "--", "/docker-entrypoint.sh"]
diff --git a/kubernetes/certmanager/templates/certificate.yaml b/kubernetes/certmanager/templates/certificate.yaml
new file mode 100644
index 0000000..a48c792
--- /dev/null
+++ b/kubernetes/certmanager/templates/certificate.yaml
@@ -0,0 +1,12 @@
+apiVersion: cert-manager.io/v1
+kind: Certificate
+metadata:
+  name: your-certificate
+  namespace: your-namespace
+spec:
+  secretName: your-secret
+  issuerRef:
+    name: ssl-issuer
+    kind: ClusterIssuer
+  dnsNames:
+    - your-hostname
\ No newline at end of file
diff --git a/kubernetes/certmanager/templates/clusterissuer-acme.yml b/kubernetes/certmanager/templates/clusterissuer-acme.yml
index d731713..da57efb 100644
--- a/kubernetes/certmanager/templates/clusterissuer-acme.yml
+++ b/kubernetes/certmanager/templates/clusterissuer-acme.yml
@@ -2,9 +2,6 @@ apiVersion: cert-manager.io/v1
 kind: ClusterIssuer
 metadata:
   name: acme-issuer
-  # (Optional) Metadata
-  # ---
-  # namespace: your-namespace
 spec:
   acme:
     # Configure your email here...
@@ -42,9 +39,8 @@ spec:
       # (Optional) Add DNS selectors
       # ---
       # selector:
-      #   dnsNames:
+      #   dnsZones:
       #   - 'your-domain'
-      #   - '*.your-domain'
 
     # HTTP Challenge:
     # - http01:
diff --git a/kubernetes/certmanager/templates/clusterissuer-selfsigned.yml b/kubernetes/certmanager/templates/clusterissuer-selfsigned.yml
index a01e326..7820a9b 100644
--- a/kubernetes/certmanager/templates/clusterissuer-selfsigned.yml
+++ b/kubernetes/certmanager/templates/clusterissuer-selfsigned.yml
@@ -2,8 +2,5 @@ apiVersion: cert-manager.io/v1
 kind: ClusterIssuer
 metadata:
   name: selfsigned-issuer
-  # (Optional) Metadata
-  # ---
-  # namespace: your-namespace
 spec:
   selfSigned: {}
\ No newline at end of file
diff --git a/kubernetes/certmanager/templates/issuer-acme.yml b/kubernetes/certmanager/templates/issuer-acme.yml
index a36c969..359b5bb 100644
--- a/kubernetes/certmanager/templates/issuer-acme.yml
+++ b/kubernetes/certmanager/templates/issuer-acme.yml
@@ -42,9 +42,8 @@ spec:
       # (Optional) Add DNS selectors
       # ---
       # selector:
-      #   dnsNames:
+      #   dnsZones:
       #   - 'your-domain'
-      #   - '*.your-domain'
 
     # HTTP Challenge:
     # - http01: