diff --git a/docker/README.md b/docker/README.md
--- a/docker/README.md
+++ b/docker/README.md
@@ -660,3 +660,14 @@
              --end-object 000001 \
              --dry-run
 ```
+
+## Using Sentry
+
+All entrypoints to SWH code (CLI, gunicorn, celery, ...) are, or should be,
+intrumented using Sentry. By default this is disabled, but if you run your
+own Sentry instance, you can use it.
+
+To do so, you must get a DSN from your Sentry instance, and set it as the
+value of `SWH_SENTRY_DSN` in the file `env/common_python.env`.
+You may also set it per-service in the `environment` section of each services
+in `docker-compose.override.yml`.
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -87,6 +87,7 @@
   swh-scheduler-db:
     image: postgres:11
     env_file:
+      - ./env/common_python.env
       - ./env/scheduler-db.env
     environment:
       # unset PGHOST as db service crashes otherwise
@@ -96,6 +97,7 @@
     image: swh/stack
     build: ./
     env_file:
+      - ./env/common_python.env
       - ./env/scheduler-db.env
       - ./env/scheduler.env
       - ./env/statsd.env
@@ -115,6 +117,7 @@
     image: swh/stack
     build: ./
     env_file:
+      - ./env/common_python.env
       - ./env/scheduler-db.env
       - ./env/scheduler.env
       - ./env/statsd.env
@@ -134,6 +137,7 @@
     image: swh/stack
     build: ./
     env_file:
+      - ./env/common_python.env
       - ./env/scheduler-db.env
       - ./env/scheduler.env
       - ./env/statsd.env
@@ -169,6 +173,7 @@
       - swh-objstorage
       - kafka
     env_file:
+      - ./env/common_python.env
       - ./env/storage-db.env
       - ./env/statsd.env
     environment:
@@ -187,6 +192,7 @@
     ports:
       - 5003:5003
     env_file:
+      - ./env/common_python.env
       - ./env/statsd.env
     environment:
       SWH_CONFIG_FILENAME: /objstorage.yml
@@ -213,6 +219,7 @@
     depends_on:
       - swh-idx-storage-db
     env_file:
+      - ./env/common_python.env
       - ./env/indexers-db.env
     environment:
       SWH_CONFIG_FILENAME: /indexer_storage.yml
@@ -233,6 +240,7 @@
       - swh-storage
       - swh-idx-storage
     env_file:
+      - ./env/common_python.env
       - ./env/statsd.env
     environment:
       VERBOSITY: 3
@@ -260,13 +268,13 @@
       - swh-deposit-db
       - swh-scheduler
     env_file:
+      - ./env/common_python.env
       - ./env/statsd.env
+      - ./env/deposit-db.env
     environment:
       VERBOSITY: 3
       SWH_CONFIG_FILENAME: /deposit.yml
       DJANGO_SETTINGS_MODULE: swh.deposit.settings.production
-    env_file:
-      - ./env/deposit-db.env
     entrypoint: /entrypoint.sh
     volumes:
       - "./conf/deposit.yml:/deposit.yml:ro"
@@ -284,6 +292,7 @@
     image: swh/stack
     build: ./
     env_file:
+      - ./env/common_python.env
       - ./env/vault-db.env
       - ./env/statsd.env
     environment:
@@ -306,6 +315,7 @@
     build: ./
     command: worker
     env_file:
+      - ./env/common_python.env
       - ./env/statsd.env
     environment:
       SWH_CONFIG_FILENAME: /cooker.yml
@@ -332,6 +342,7 @@
     image: swh/stack
     build: ./
     env_file:
+      - ./env/common_python.env
       - ./env/listers-db.env
       - ./env/listers.env
       - ./env/statsd.env
@@ -356,6 +367,7 @@
     image: swh/stack
     build: ./
     env_file:
+      - ./env/common_python.env
       - ./env/listers.env
       - ./env/statsd.env
     user: swh
@@ -378,6 +390,7 @@
     build: ./
     user: swh
     env_file:
+      - ./env/common_python.env
       - ./env/indexers-db.env
       - ./env/indexers.env
       - ./env/statsd.env
@@ -398,6 +411,8 @@
     image: swh/stack
     build: ./
     entrypoint: /entrypoint.sh
+    env_file:
+      - ./env/common_python.env
     depends_on:
       - kafka
       - swh-storage
diff --git a/docker/env/common_python.env b/docker/env/common_python.env
new file mode 100644
--- /dev/null
+++ b/docker/env/common_python.env
@@ -0,0 +1,5 @@
+# Forces Python's stdout to be shown in docker logs before they exit:
+PYTHONUNBUFFERED=1
+
+# Uncomment and set this to a Sentry DSN to report errors to Sentry:
+# SWH_SENTRY_DSN=
diff --git a/docker/services/swh-deposit/entrypoint.sh b/docker/services/swh-deposit/entrypoint.sh
--- a/docker/services/swh-deposit/entrypoint.sh
+++ b/docker/services/swh-deposit/entrypoint.sh
@@ -31,5 +31,6 @@
                   --workers 2 \
                   --log-level DEBUG \
                   --timeout 3600 \
+                  --config 'python:swh.core.api.gunicorn_config' \
                   'django.core.wsgi:get_wsgi_application()'
 fi
diff --git a/docker/services/swh-indexer-storage/entrypoint.sh b/docker/services/swh-indexer-storage/entrypoint.sh
--- a/docker/services/swh-indexer-storage/entrypoint.sh
+++ b/docker/services/swh-indexer-storage/entrypoint.sh
@@ -27,6 +27,7 @@
          --workers 2 \
          --log-level DEBUG \
          --timeout 3600 \
+         --config 'python:swh.core.api.gunicorn_config' \
          'swh.indexer.storage.api.server:make_app_from_configfile()'
     ;;
 esac
diff --git a/docker/services/swh-objstorage/entrypoint.sh b/docker/services/swh-objstorage/entrypoint.sh
--- a/docker/services/swh-objstorage/entrypoint.sh
+++ b/docker/services/swh-objstorage/entrypoint.sh
@@ -19,6 +19,7 @@
        --workers 2 \
        --reload \
        --timeout 3600 \
+       --config 'python:swh.core.api.gunicorn_config' \
        'swh.objstorage.api.server:make_app_from_configfile()'
 
 fi
diff --git a/docker/services/swh-scheduler/entrypoint.sh b/docker/services/swh-scheduler/entrypoint.sh
--- a/docker/services/swh-scheduler/entrypoint.sh
+++ b/docker/services/swh-scheduler/entrypoint.sh
@@ -29,6 +29,7 @@
              --workers 2 \
              --reload \
              --timeout 3600 \
+             --config 'python:swh.core.api.gunicorn_config' \
              'swh.scheduler.api.server:make_app_from_configfile()'
 
 esac
diff --git a/docker/services/swh-search/entrypoint.sh b/docker/services/swh-search/entrypoint.sh
--- a/docker/services/swh-search/entrypoint.sh
+++ b/docker/services/swh-search/entrypoint.sh
@@ -26,6 +26,7 @@
            --workers 2 \
            --log-level DEBUG \
            --timeout 3600 \
+           --config 'python:swh.core.api.gunicorn_config' \
            'swh.search.api.server:make_app_from_configfile()'
       ;;
 esac
diff --git a/docker/services/swh-storage-replayer/entrypoint.sh b/docker/services/swh-storage-replayer/entrypoint.sh
--- a/docker/services/swh-storage-replayer/entrypoint.sh
+++ b/docker/services/swh-storage-replayer/entrypoint.sh
@@ -20,7 +20,7 @@
           --db-name ${POSTGRES_DB} storage
 
       echo Starting the swh-storage Kafka storage replayer
-      exec swh-journal replay \
+      exec swh journal replay \
 		   --broker kafka \
 		   --prefix swh.journal.objects \
 		   --consumer-id swh.storage.replica
diff --git a/docker/services/swh-storage/entrypoint.sh b/docker/services/swh-storage/entrypoint.sh
--- a/docker/services/swh-storage/entrypoint.sh
+++ b/docker/services/swh-storage/entrypoint.sh
@@ -40,6 +40,7 @@
            --workers 2 \
            --log-level DEBUG \
            --timeout 3600 \
+           --config 'python:swh.core.api.gunicorn_config' \
            'swh.storage.api.server:make_app_from_configfile()'
       ;;
 esac
diff --git a/docker/services/swh-web/entrypoint.sh b/docker/services/swh-web/entrypoint.sh
--- a/docker/services/swh-web/entrypoint.sh
+++ b/docker/services/swh-web/entrypoint.sh
@@ -34,5 +34,6 @@
              --threads 2 \
              --workers 2 \
              --timeout 3600 \
+             --config 'python:swh.web.gunicorn_config' \
              'django.core.wsgi:get_wsgi_application()'
 esac