do not specify architectures in Dockerfile (#458)

Dockerfile

@@ -85,7 +85,7 @@ RUN set -eux \
     && export DEBIAN_FRONTEND=noninteractive \
     && apt-get update \
     && wget -O- https://www.postgresql.org/media/keys/ACCC4CF8.asc | gpg --dearmor |  sh -c 'cat > /usr/share/keyrings/postgresql.gpg' > /dev/null \
-    && echo deb [arch=amd64,arm64,ppc64el signed-by=/usr/share/keyrings/postgresql.gpg] https://apt.postgresql.org/pub/repos/apt/ ${IMAGE_VERSION}-pgdg main | tee /etc/apt/sources.list.d/pgdg.list 2>/dev/null \
+    && echo deb [signed-by=/usr/share/keyrings/postgresql.gpg] https://apt.postgresql.org/pub/repos/apt/ ${IMAGE_VERSION}-pgdg main | tee /etc/apt/sources.list.d/pgdg.list 2>/dev/null \
     && apt-get -y --purge autoremove \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* \