diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
new file mode 100644
index 0000000..9434d46
--- /dev/null
+++ b/.github/workflows/docker.yml
@@ -0,0 +1,39 @@
+name: Build + Push Docker images
+run-name: Build + Push Docker images
+
+on:
+  - push
+  - workflow_dispatch
+
+jobs:
+    build-and-push:
+        name: Build and Push ${{ matrix.name }}
+        runs-on: ubuntu-latest
+        strategy:
+          matrix:
+            include:
+              - dockerfile: ./Dockerfile
+                name: psql-dump
+                context: ./
+                python-version: 3.11
+        steps:
+            - uses: actions/checkout@v3
+            - name: Setup Docker Buildx
+              uses: docker/setup-buildx-action@v2
+            - name: Login into DockerHub
+              uses: docker/login-action@v2
+              with:
+                username: ${{ secrets.DOCKERHUB_USERNAME }}
+                password: ${{ secrets.DOCKERHUB_TOKEN }}
+                logout: true
+            - name: Build + Push ${{ matrix.name }} image to DockerHub
+              uses: docker/build-push-action@v4
+              with:
+                context: ${{ matrix.context }}
+                file: ${{ matrix.dockerfile }}
+                push: true
+                build-args:
+                  PYTHON_VERSION=${{ matrix.python-version }}
+                tags: |
+                    ${{ secrets.DOCKERHUB_USERNAME }}/${{ matrix.name }}:${{ matrix.python-version }}
+                    ${{ secrets.DOCKERHUB_USERNAME }}/${{ matrix.name }}:latest
diff --git a/compose.yaml b/compose.yaml
index e617364..6c0ba9b 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -4,6 +4,9 @@ services:
       context: .
     volumes:
       - ./dumps:/dumps
+    environment:
+      - PSQL_HOST=ihr-db.iijlab.net
+      - PSQL_ROLE=romain
 
 # The commented out section below is an example of how to define a PostgreSQL
 # database that your application can use. `depends_on` tells Docker Compose to
diff --git a/configs/country_hegemony_v4.json b/configs/country_hegemony_v4.json
index 3738ddf..4d54612 100644
--- a/configs/country_hegemony_v4.json
+++ b/configs/country_hegemony_v4.json
@@ -1,6 +1,6 @@
 {
     "database": "ihr",
-    "query": "select timebin, weight, weightscheme, tansitonly, asn_id as asn, country_id as country, hege from ihr_hegemony_country where af=4 and timebin>='{startdate.year}-{startdate.month}-{startdate.day}' and timebin<'{enddate.year}-{enddate.month}-{enddate.day}'",
+    "query": "select timebin, weight, weightscheme, transitonly, asn_id as asn, country_id as country, hege from ihr_hegemony_country where af=4 and timebin>='{startdate.year}-{startdate.month}-{startdate.day}' and timebin<'{enddate.year}-{enddate.month}-{enddate.day}'",
     "dump_root": "/dumps/ihr/country_hegemony/ipv4/",
     "dump_fname": "ihr_country_hegemony_ipv4"
 }
diff --git a/dumpit.py b/dumpit.py
index 35e9ccd..cfc46e1 100644
--- a/dumpit.py
+++ b/dumpit.py
@@ -36,9 +36,10 @@ def dump(self, date, compress='lz4'):
         # create directories if needed
         os.makedirs(dump_folder, exist_ok=True) 
 
-        cmd = r"""psql -d {db} -h {psql_host} -c "\copy ({query}) to '{fname}' csv header;" """.format(
+        cmd = r"""psql -d {db} -h {psql_host} -U {psql_role} -c "\copy ({query}) to '{fname}' csv header;" """.format(
             db=self.config['database'],
             psql_host=PSQL_HOST,
+            psql_role=PSQL_ROLE,
             query=query,
             fname=dump_folder+dump_fname
             )
@@ -66,6 +67,8 @@ def dump(self, date, compress='lz4'):
 
     global PSQL_HOST
     PSQL_HOST = os.environ["PSQL_HOST"]
+    global PSQL_ROLE
+    PSQL_ROLE = os.environ["PSQL_ROLE"]
 
     parser = argparse.ArgumentParser(
             description='Dump data from the database to a CSV file')