obs-443: switch to docker compose watch

Currently for the local dev environment, we volume mount the local
directory as `/app` which causes anything built during docker image
build to be shadowed by the user's local directory. We get around this
by having docker image build any artifacts into directories in the image
that are not under `/app`. This is a little wonky and there are hacks
strewn about to alleviate the consequences.

Instead of doing that, this PR is an initial pass and switching to
docker compose watch. In this new model, we no longer volume mount the
local directory as `/app` and instead docker compose watches for changes
on the local file system and syncs them with the container and will run
any rebuilding scripts.

This should work with the local dev environment, CI, and server
environments.

This requires v2.22.0 of docker compose plugin.

This doesn't update documentation and doesn't document edge cases to be
aware of.

docker-compose.yml

@@ -27,6 +27,11 @@ services:
       - postgresql
       - legacy-elasticsearch
       - elasticsearch
+    develop:
+      watch:
+        - action: sync
+          path: .
+          target: /app
 
   # For development
 
@@ -44,6 +49,11 @@ services:
       - postgresql
       - legacy-elasticsearch
       - elasticsearch
+    develop:
+      watch:
+        - action: sync
+          path: .
+          target: /app
 
   devcontainer:
     build:
@@ -82,6 +92,11 @@ services:
       - elasticsearch
       - symbolsserver
     command: ["processor"]
+    develop:
+      watch:
+        - action: sync
+          path: .
+          target: /app
 
   crontabber:
     image: local/socorro_app
@@ -95,6 +110,11 @@ services:
       - legacy-elasticsearch
       - elasticsearch
     command: ["crontabber"]
+    develop:
+      watch:
+        - action: sync
+          path: .
+          target: /app
 
   webapp:
     image: local/socorro_app
@@ -114,6 +134,11 @@ services:
     command: ["webapp", "--dev"]
     ports:
       - "8000:8000"
+    develop:
+      watch:
+        - action: sync
+          path: .
+          target: /app
 
   stage_submitter:
     image: local/socorro_app
@@ -125,6 +150,11 @@ services:
       - gcs-emulator
       - pubsub
     command: ["stage_submitter"]
+    develop:
+      watch:
+        - action: sync
+          path: .
+          target: /app
 
   # https://github.com/willkg/kent
   fakesentry:

justfile

@@ -14,7 +14,7 @@ _env:
 
 # Build docker images
 build *args: _env
-    docker compose build --progress plain {{args}}
+    docker compose --progress plain build {{args}}
 
 # Set up Postgres, Elasticsearch, local Pub/Sub, and local GCS services.
 setup: _env
@@ -25,8 +25,8 @@ update-data: _env
     docker compose run --rm app shell /app/bin/update_data.sh
 
 # Run services, defaults to socorro and fakesentry for debugging
-run *args='--attach=processor --attach=webapp --attach=fakesentry processor webapp': _env
-    docker compose up {{args}}
+run *args='--attach=processor --attach=webapp --attach=fakesentry processor webapp': _env build
+    docker compose up --watch {{args}}
 
 # Run stage submitter and fake collector
 run-submitter *args='--attach=stage_submitter --attach=fakecollector': _env