diff --git a/postgres/build/Dockerfile b/postgres/build/Dockerfile
index c416738..6bfae6e 100644
--- a/postgres/build/Dockerfile
+++ b/postgres/build/Dockerfile
@@ -1,6 +1,5 @@
-## is a simple copy of postgres:10-alpine
-FROM docker.0k.io/postgres:10-alpine as common
-
+## is a simple copy of postgis/postgis:10-3.0-alpine
+FROM docker.0k.io/postgis:10-3.0-alpine as common
 
 FROM common AS builder
 
@@ -25,12 +24,12 @@ USER root
 
 RUN apk add curl
 
-RUN curl -L https://raw.githubusercontent.com/0k/pgm/0.0.2/bin/pgm > /bin/pgm && \
+RUN curl -L https://raw.githubusercontent.com/0k/pgm/0.0.3/bin/pgm > /bin/pgm && \
     chmod +x /bin/pgm
 
 FROM common
 
-RUN apk -U add pv python file
+RUN apk -U add pv python2 file sed
 
 COPY --from=builder /home/packager/packages/tmp/x86_64/*.apk /tmp/
 COPY --from=builder /bin/pgm /bin
diff --git a/postgres/hooks/init b/postgres/hooks/init
index 87c5419..f90da72 100755
--- a/postgres/hooks/init
+++ b/postgres/hooks/init
@@ -21,14 +21,25 @@ set -e
 
 if ! [ -f "$LOCAL_DB_PASSFILE" ]; then
     POSTGRES_ROOT_PASSWORD="$(gen_password)"
+
+    ## required by image of postgres for first run
+    server_docker_opts=("${server_docker_opts[@]}" -e POSTGRES_HOST_AUTH_METHOD=trust)
     ddb < <(echo "ALTER USER postgres WITH ENCRYPTED password '$POSTGRES_ROOT_PASSWORD'")
     cat <<EOF > "$LOCAL_DB_PASSFILE"
 *:*:*:postgres:$POSTGRES_ROOT_PASSWORD
 EOF
     chmod 600 "$LOCAL_DB_PASSFILE"
-    info "New root password for postgres. "
+    info "New root password for postgres."
+
+    ## resetting ``server_docker_opts``, and forcing stop to remove the
+    ## POSTGRES_HOST_AUTH_METHOD arg.
+    docker stop "$container_id"
+    docker rm "$container_id"
+    server_docker_opts=()
+    _set_server_db_params
 fi
 
+
 if ! egrep "^host all all (0.0.0.0/0|all) md5\$" "$PG_HBA" >/dev/null 2>&1; then
      if egrep "^host all all (0.0.0.0/0|all) trust\$" "$PG_HBA" >/dev/null 2>&1; then
          sed -ri 's%^host all all (0\.0\.0\.0/0|all) trust$%host all all \1 md5%g' \
diff --git a/postgres/lib/common b/postgres/lib/common
index f08be7a..75716f7 100644
--- a/postgres/lib/common
+++ b/postgres/lib/common
@@ -74,7 +74,7 @@ db_install_extensions() {
         case "$1" in
             postgis)
                 ddb -d "$dbname" < <(echo "CREATE EXTENSION postgis; CREATE EXTENSION postgis_topology;") || return 1
-                dcmd /bin/bash -c "psql -d '$dbname' -f /usr/share/postgresql/*/contrib/postgis-2.1/legacy.sql" || return 1
+                dcmd /bin/bash -c "psql -d '$dbname' -v ON_ERROR_STOP=1 -f /usr/local/share/postgresql/contrib/postgis-*/legacy.sql" || return 1
                 info "Installed postgis extensions on database '$dbname'."
                 ;;
             *)
@@ -129,5 +129,5 @@ PGM() {
 
 db_grant_rights () {
     local dbname="$1" user="$2"
-    PGM chown "$user" "$dbname"
+    PGM chown -v "$user" "$dbname"
 }