diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..bf6a852
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,12 @@
+FROM python:3.9-alpine as python
+
+RUN mkdir /root/DTS-aggregator
+WORKDIR /root/DTS-aggregator
+
+COPY ["./", "./"]
+
+RUN pip install -r requirements.txt
+
+EXPOSE 5000
+
+CMD ["flask", "run", "--host=0.0.0.0"]
\ No newline at end of file
diff --git a/README.md b/README.md
index 7ee5696..462c0c0 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,6 @@
 # DTS aggregator
 
-An aggregator of known [DTS](https://w3id.org/dts/) APIs, implemented as a DTS API and running as a [Flask](https://flask.palletsprojects.com/) application.
-
-**What does it mean?** This registry is itself a DTS collection of DTS APIs.
-
-A demo version of the DTS aggregator is accessible at <https://dts-aggregator.herokuapp.com/>.
+An aggregator of known [DTS](https://w3id.org/dts/) APIs, implemented as a DTS API and running as a [Flask](https://flask.palletsprojects.com/) application (this just means that the registry itself is a DTS collection of DTS APIs).
 
 A list of known APIs is maintained in [`registry.json`](./registry.json).
 Are you aware of a DTS API that is not listed there? Please add it to the registry file and open a Pull Request.
@@ -22,3 +18,17 @@ pip install -r requirements.txt
 ```bash
 flask run
 ```
+
+## Run the aggregator on a container (Docker/Podman)
+
+Navigate to the aggregator root folder, then run :
+
+```bash
+docker build -t dts-agg-image .
+```
+
+start container with :
+
+```bash
+docker run --rm --name dts-agg -itd -p 5000:5000 dts-agg-image
+```
\ No newline at end of file
diff --git a/app/__init__.py b/app/__init__.py
index b4947c6..90e711e 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -24,7 +24,8 @@ def count_total_items(baseuri: str) -> int:
     """
     h = {"User-Agent": "DTS Client"}
     entry_request = requests.get(baseuri, headers=h)
-    ENDPOINTS = entry_request.json()
+    if entry_request.status_code == 200:
+        ENDPOINTS = entry_request.json()
 
     try:
         ROOT_COLLECTION = requests.get(
diff --git a/registry.json b/registry.json
index bf5f41e..ff5be54 100644
--- a/registry.json
+++ b/registry.json
@@ -11,7 +11,7 @@
         }
     },
     {
-        "endpoint": "http://dev.chartes.psl.eu/api/nautilus/dts",
+        "endpoint": "https://dev.chartes.psl.eu/dts",
         "protocol": "dts",
         "status": "demo",
         "label": "École des Chartes Demo",
@@ -40,16 +40,6 @@
         "name": "Frank Grieshaber"
       }
     },
-    {
-      "endpoint": "https://dts.perseids.org/",
-      "label":"Perseids",
-      "protocol": "dts",
-      "status": "experimental",
-      "contact": {
-        "email": "mailto:Zachary.Fletcher@tufts.edu",
-        "name": "Zachary Fletcher"
-      }
-    },
     {
       "endpoint": "https://teipublisher.com/exist/apps/vangogh/api/dts",
       "label":"Van Gogh Letters (TEIPublisher demo)",
@@ -69,5 +59,15 @@
           "email": "mailto:thibault.clerice@chartes.psl.eu",
           "name": "Thibault Clérice"
         }
-    }
+    },
+    {
+      "endpoint": "https://www.briefedition.alfred-escher.ch/exist/apps/escher/api/dts/",
+      "protocol": "dts",
+      "status": "production",
+      "label": "Alfred Escher-Briefedition",
+      "contact": {
+        "email": "mailto:staatsarchivzh@ji.zh.ch",
+        "name": "Staatsarchiv | Kanton Zürich"
+      }
+  }
 ]}
diff --git a/requirements.txt b/requirements.txt
index 1e670c7..7c08aeb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-flask>=1.1.1,<=2.0.0
+flask>=3.0.0
 flask-cors>=3.0.8,<=4.0.0
 gunicorn
 requests