fix: db connection, wait if receiving "the database system is starting up".

bin/compose-core

@@ -807,7 +807,7 @@ export -f wait_for_tcp_port
 
 ## Warning: requires a ``ddb`` matching current database to be checked
 wait_for_docker_ip() {
-    local name=$1 DOCKER_IP= DOCKER_NETWORK= docker_ips= docker_ip=
+    local name=$1 DOCKER_IP= DOCKER_NETWORK= docker_ips= docker_ip= elapsed timeout=10
     docker_ip=$(wait_docker_ip "$name" 5) || return 1
     IFS=: read DOCKER_NETWORK DOCKER_IP <<<"$docker_ip"
     if ! str_is_ipv4 "$DOCKER_IP"; then
@@ -823,12 +823,32 @@ wait_for_docker_ip() {
     done < <(image_exposed_ports_0 "$container_id")
 
     ## Checking direct connection
-    if ! echo "SELECT 1;" | ddb >/dev/null; then
+    timeout=10
+    start=$SECONDS
+    while true; do
+        if err=$(echo "SELECT 1;" | ddb 2>&1 >/dev/null); then
+            break
+        fi
+        if ! [[ "$err" == *"the database system is starting up" ]]; then
+            err "${RED}db connection error${NORMAL}:" \
+                "Could not connect to db on $DOCKER_IP container's IP."
+            echo "  Note: IP up, TCP ports is(are) open" >&2
+            if [ "$err" ]; then
+                echo "  Error:" >&2
+                printf "%s\n" "$err" | prefix "   ${RED}!${NORMAL} " >&2
+            fi
+            return 18
+        fi
+        debug "Got starting up error '$err'."
+        elapsed=$((SECONDS - start))
+        if ((elapsed > timeout)); then
             err "${RED}db connection error${NORMAL}:"\
             "Could not connect to db on $DOCKER_IP" \
-            "container's IP. (IP up, TCP ports is(are) open)"
-        return 18
+            "container's IP. (IP up, TCP ports is(are) open, sql answer after ${timeout}s)"
+            return 1
         fi
+        sleep 0.2
+    done
     echo "${DOCKER_NETWORK}:${DOCKER_IP}"
     return 0
 }