chore: isolate examples database by default (#25003)

(cherry picked from commit 269c99293f)

docker/.env

@@ -22,6 +22,12 @@ DATABASE_HOST=db
 DATABASE_PASSWORD=superset
 DATABASE_USER=superset
 
+EXAMPLES_DB=examples
+EXAMPLES_HOST=db
+EXAMPLES_USER=examples
+EXAMPLES_PASSWORD=examples
+EXAMPLES_PORT=5432
+
 # database engine specific environment variables
 # change the below if you prefer another database engine
 DATABASE_PORT=5432

docker/docker-entrypoint-initdb.d/examples-init.sh

@@ -0,0 +1,15 @@
+# ------------------------------------------------------------------------
+# Creates the examples database and repective user. This database location
+# and access credentials are defined on the environment variables
+# ------------------------------------------------------------------------
+set -e
+
+psql -v ON_ERROR_STOP=1 --username "${POSTGRES_USER}" <<-EOSQL
+  CREATE USER ${EXAMPLES_USER} WITH PASSWORD '${EXAMPLES_PASSWORD}';
+  CREATE DATABASE ${EXAMPLES_DB};
+  GRANT ALL PRIVILEGES ON DATABASE ${EXAMPLES_DB} TO ${EXAMPLES_USER};
+EOSQL
+
+psql -v ON_ERROR_STOP=1 --username "${POSTGRES_USER}" -d "${EXAMPLES_DB}" <<-EOSQL
+   GRANT ALL ON SCHEMA public TO ${EXAMPLES_USER};
+EOSQL

docker/pythonpath_dev/superset_config.py

@@ -51,14 +51,24 @@ DATABASE_HOST = get_env_variable("DATABASE_HOST")
 DATABASE_PORT = get_env_variable("DATABASE_PORT")
 DATABASE_DB = get_env_variable("DATABASE_DB")
 
+EXAMPLES_USER = get_env_variable("EXAMPLES_USER")
+EXAMPLES_PASSWORD = get_env_variable("EXAMPLES_PASSWORD")
+EXAMPLES_HOST = get_env_variable("EXAMPLES_HOST")
+EXAMPLES_PORT = get_env_variable("EXAMPLES_PORT")
+EXAMPLES_DB = get_env_variable("EXAMPLES_DB")
+
+
 # The SQLAlchemy connection string.
-SQLALCHEMY_DATABASE_URI = "{}://{}:{}@{}:{}/{}".format(
-    DATABASE_DIALECT,
-    DATABASE_USER,
-    DATABASE_PASSWORD,
-    DATABASE_HOST,
-    DATABASE_PORT,
-    DATABASE_DB,
+SQLALCHEMY_DATABASE_URI = (
+    f"{DATABASE_DIALECT}://"
+    f"{DATABASE_USER}:{DATABASE_PASSWORD}@"
+    f"{DATABASE_HOST}:{DATABASE_PORT}/{DATABASE_DB}"
+)
+
+SQLALCHEMY_EXAMPLES_URI = (
+    f"{DATABASE_DIALECT}://"
+    f"{EXAMPLES_USER}:{EXAMPLES_PASSWORD}@"
+    f"{EXAMPLES_HOST}:{EXAMPLES_PORT}/{EXAMPLES_DB}"
 )
 
 REDIS_HOST = get_env_variable("REDIS_HOST")