diff --git a/.env.dev b/.env.dev
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+###############################################################################
+# ⚠️ Do not use this file in production. This is only for development purposes.
+###############################################################################
+
+# This values are configured by default in the compose.yaml file, so you can
+# copy this file to .env and use it as is (only for development).
+
+# Encryption key is used to encrypt and decrypt the sensitive data stored
+# in the database such as database credentials, secret keys, etc.
+PBW_ENCRYPTION_KEY="encryption-key"
+
+# Database connection string for a PostgreSQL database where the pgbackweb
+# will store its data.
+PBW_POSTGRES_CONN_STRING="postgresql://postgres:password@localhost:5432/pgbackweb"