test: use local login helper

cypress/support/e2e.ts

@@ -1,3 +1,46 @@
-import { enableAutoLogin } from '@dhis2/cypress-commands'
+/* global Cypress */
 
-enableAutoLogin()
+/**
+ * Custom login command, can be used to login or switch between sessions.
+ * Will cache and restore cookies, localStorage, and sessionStorage. See:
+ * https://docs.cypress.io/api/commands/session
+ */
+Cypress.Commands.add('login', (user) => {
+    cy.session(
+        user,
+        () => {
+            // Login via API
+            cy.request({
+                url: `${user.server}/dhis-web-commons-security/login.action`,
+                method: 'POST',
+                form: true,
+                followRedirect: true,
+                body: {
+                    j_username: user.name,
+                    j_password: user.password,
+                    '2fa_code': '',
+                },
+            })
+
+            // Set base url for the app platform
+            window.localStorage.setItem('DHIS2_BASE_URL', user.server)
+        },
+        {
+            validate: () => {
+                cy.request(`${user.server}/api/me`).then((response) => {
+                    expect(response.status).to.eq(200)
+                    expect(response.body.username).to.eq(user.name)
+                })
+            },
+        }
+    )
+})
+
+// Log in before each test, if not already logged in
+beforeEach(() => {
+    cy.login({
+        name: Cypress.env('LOGIN_NAME'),
+        password: Cypress.env('LOGIN_PASSWORD'),
+        server: Cypress.env('LOGIN_SERVER'),
+    })
+})