Upgrade Contao v3 to v4

Today I upgrade an Contao v3 installation to Contao v4. Steps overview: Backup Setup local server with apache as docker container Migrate to v4 Migrate code manually until page looks like in v3 Move files to destination server NOTE: Some steps below are explained very short, if you need more details please leave a comment and I will go more into depth for the needed step. Workflow Create a backup …

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