fix(compose): editing compose file and add setup hints

[str-anger]

This PR edits an example compose file. Fixes some issues with extensions, adds volume to postgres, and gives some advises about setting the values.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
aqueductcore/backend
context.py	33	4	88%	48–52, 59–60
main.py	19	4	79%	21–24, 31
session.py	13	4	69%	24–28
aqueductcore/backend/models
extensions.py	151	13	91%	53, 56, 80–81, 88, 94, 96–97, 176, 218, 247, 253, 261
orm.py	31	1	97%	58
aqueductcore/backend/routers
files.py	88	2	98%	169–170
frontend.py	24	11	54%	22–33, 37
aqueductcore/backend/routers/graphql
mutations_schema.py	57	2	96%	48, 133
query_schema.py	45	2	96%	66–68
router.py	11	1	91%	15
aqueductcore/backend/routers/graphql/mutations
experiment_mutations.py	24	1	96%	30
aqueductcore/backend/routers/graphql/resolvers
experiment_resolver.py	25	2	92%	28, 36
tags_resolver.py	25	3	88%	14, 44, 46
aqueductcore/backend/services
experiment.py	220	32	85%	82, 111–124, 154, 188, 194, 240, 243, 268, 300, 348, 354, 383, 389, 406, 431, 438, 446, 476–482, 489–493, 505–508
extensions_executor.py	88	8	91%	39–42, 68, 83, 86, 152–158, 206
validators.py	33	2	94%	41, 46
aqueductcore/cli
commands.py	60	7	88%	32, 82–85, 94–98, 110–114
exporter.py	49	1	98%	71
importer.py	61	1	98%	90
TOTAL	1349	101	93%

Tests	Skipped	Failures	Errors	Time
101	1 💤	0 ❌	0 🔥	28.362s ⏱️

[github-actions]

Azure Static Web Apps: Your stage site is ready! Visit it here: https://black-sand-0b0e2a903-173.westeurope.3.azurestaticapps.net

[safeamiiir]

Helpful doc update