how to keep current image file on update form django

Question

I am making an updated profile page that concludes by changing the picture, name, and email. every time I tried to change email or name without changing the picture, it erase the picture column.

How can I prevent this to happen?

I've tried to put a value on the input file, but then I found out that the input file will not read the value and always give back C://fakepath//

forms.py :

class UpdateForm(forms.Form):
    name = forms.CharField(
        max_length=255, required=True, help_text="Required, name"
    )
    email = forms.CharField(
        max_length=254, help_text="Required. Inform a valid email address."
    )
    avatar = forms.ImageField(required=False)

views.py :

class Account(LoginRequiredMixin, FormView):
    model = CustomUser
    form_class = UpdateForm
    user = None
    template_name = 'settings/account.html'

    def get(self, request, *args, **kwargs):
        self.user = get_object_or_404(CustomUser, id=kwargs["pk"])
        return super(Account, self).get(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):
        self.user = get_object_or_404(CustomUser, id=kwargs["pk"])
        return super(Account, self).post(request, *args, **kwargs)

    def form_valid(self, form):
        self.user.email = form.cleaned_data["email"]
        self.user.name = form.cleaned_data["name"]
        self.user.avatar = form.cleaned_data.get('avatar')

        self.user.save()
        messages.add_message(
            self.request, messages.SUCCESS, "Update {} user success".format(self.user.name)
        )
        return super(Account, self).form_valid(form)

Templates :

<form action="{% url 'Account-list' user.id %}" method="post" enctype="multipart/form-data">
                        {% csrf_token %}
<input accept="image/*" name="avatar" type='file' id="imgInp" />
<label for="" class="field-label">Full Name</label>
<input type="text" name="name" id="name" class="field-style" value="{{user.name}}"
                                    placeholder="Write name here...">
<label for="" class="field-label">Email Registered</label>
<input type="text" name="email" id="email" class="field-style" value="{{user.email}}"
                                    placeholder="Write email here...">
</form>