OAUTH2/OpenID-Connect fails with alpine based image about container HOT 6 CLOSED

apiVersion: apps/v1
kind: Deployment
metadata:
  name: codimd
  namespace: codimd
  labels:
    app: codimd
spec:
  replicas: 1
  selector:
    matchLabels:
      app: codimd
  template:
    metadata:
      labels:
        app: codimd
    spec:
      containers:
      - name: codimd
        image: quay.io/hedgedoc/hedgedoc:1.7.1-debian
        imagePullPolicy: Always
        env:
        - name: "CMD_DB_URL"
          valueFrom:
            secretKeyRef:
              name: codimd-cfg
              key: pg_cstr
        - name: "CMD_DOMAIN"
          value: "codimd.<redacted>"
        - name: "CMD_USECDN"
          value: "false"
        - name: "CMD_PROTOCOL_USESSL"
          value: "true"
        - name: "CMD_EMAIL"
          value: "true"
        - name: "CMD_URL_ADDPORT"
          value: "false"
        - name: "CMD_ALLOW_EMAIL_REGISTER"
          value: "false"
        - name: "CMD_ALLOW_ANONYMOUS"
          value: "true"
        - name: "CMD_ALLOW_ANONYMOUS_EDITS"
          value: "false"
        - name: "CMD_OAUTH2_USER_PROFILE_URL"
          value: "https://keycloak.<redacted>/auth/realms/<redacted>/protocol/openid-connect/userinfo"
        - name: "CMD_OAUTH2_USER_PROFILE_USERNAME_ATTR"
          value: "preferred_username"
        - name: "CMD_OAUTH2_USER_PROFILE_DISPLAY_NAME_ATTR"
          value: "name"
        - name: "CMD_OAUTH2_USER_PROFILE_EMAIL_ATTR"
          value: "email"
        - name: "CMD_OAUTH2_TOKEN_URL"
          value: "https://keycloak.<redacted>/auth/realms/<redacted>/protocol/openid-connect/token"
        - name: "CMD_OAUTH2_AUTHORIZATION_URL"
          value: "https://keycloak.<redacted>/auth/realms/<redacted>/protocol/openid-connect/auth"
        - name: "CMD_OAUTH2_CLIENT_ID"
          value: "codimd"
        - name: "CMD_OAUTH2_CLIENT_SECRET"
          value: "<redacted>"
        - name: "CMD_OAUTH2_PROVIDERNAME"
          value: "Keycloak"
        - name: "CMD_SESSION_SECRET"
          value: "<redacted>"
        ports:
        - name: http-codimd
          containerPort: 3000
        volumeMounts:
        - name: uploads
          mountPath: /home/hackmd/app/public/uploads
      volumes:
      - name: uploads
        hostPath:
          path: /srv/codimd/codimd