KubeSail/community

Hi, I've successfuly deployed 2 containers in one pod (php/nginx), images are pulled from gitlab registry using authentication.
Now in another deployment I want to deploy a standard mysql image from dockerhub.
I've used the same syntax without the imagePullSecret node, but I always get: "Error from server (BadRequest): container "mysql" in pod "mysql-6989b4d5d5-w6254" is waiting to start: ContainerCreating".

Here's my deployment file, I'm doing something wrong? (I'm pretty new to k8s).

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
  labels:
    app: mvsa
    tier: mysql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mvsa
      tier: mysql
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: mvsa
        tier: mysql
    spec:
      volumes:
        - name: pvc-mvsa-db
          persistentVolumeClaim:
            claimName: pvc-mvsa-db
      containers:
        - name: mysql
          image: mysql:8.0.18-2
          ports:
            - containerPort: 3306
          volumeMounts:
            - mountPath: /var/lib/mysql
              name: pvc-mvsa-db
          resources:
            requests:
              memory: "32M"
              cpu: "4m"
            limits:
              memory: "64M"
              cpu: "4m"
        env:
          - name: MYSQL_ROOT_PASSWORD
            valueFrom:
              secretKeyRef:
                name: mvsa-mysql-secret
                key: mysql_root_password
          - name: MYSQL_USER
            valueFrom:
              secretKeyRef:
                name: mvsa-mysql-secret
                key: mysql_user
          - name: MYSQL_PASSWORD
            valueFrom:
              secretKeyRef:
                name: mvsa-mysql-secret
                key: mysql_password