diff --git a/.dockerignore b/.dockerignore
index 62623fd..35b189b 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,17 +1,21 @@
-**/.git
-**/.vs
-**/.idea
-**/.vscode
+# Keep the backend build context as small and predictable as possible.
+# The backend Docker build uses the repo root as its context, so exclude
+# everything first and then opt back into only the source folders it needs.
+*
+!JobTrackerApi/
+!Data/
+!Models/
+!.dockerignore
 
-**/bin
-**/obj
-**/bin_build
+# Include the source trees.
+!JobTrackerApi/**
+!Data/**
+!Models/**
 
-**/*.db
-**/*.db-*
-
-job-tracker-ui/node_modules
-job-tracker-ui/build
-
-**/node_modules
-**/npm-debug.log
+# Re-exclude generated and local data inside the backend project.
+JobTrackerApi/bin/
+JobTrackerApi/obj/
+JobTrackerApi/bin_build/
+JobTrackerApi/Attachments/
+JobTrackerApi/*.db
+JobTrackerApi/*.db-*
diff --git a/.gitignore b/.gitignore
index 1dbe6c6..7d6fb24 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,6 +17,7 @@ __pycache__/
 # .NET / Visual Studio
 bin/
 obj/
+bin_build/
 .vs/
 *.user
 *.suo
@@ -39,3 +40,8 @@ coverage/
 temp_job.json
 temp_post_job.py
 todo jobtracker.txt
+
+# Local app data
+*.db
+*.db-*
+Attachments/
diff --git a/docker-compose.yml b/docker-compose.yml
index 181ee91..9299d58 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,3 @@
-version: "3.9"
-
 services:
 
   backend:
@@ -64,4 +62,3 @@ services:
 
 volumes:
   jobtracker_data:
-