fix(devcontainer): use Maven wrapper for dependency caching (#330)

* fix(devcontainer): add workspace mount to docker-compose

- add explicit workspace mount ../:/workspaces/SimpleAccounts-UAE
- use fixed workspace path instead of variable
- fixes 'lstat /workspaces/content: no such file or directory' error

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* chore(devcontainer): optimize prebuilt image performance

- Bake Playwright system dependencies into Dockerfile
- Combine apt-get layers for efficiency
- Pre-cache Maven and NPM dependencies during build
- Update post-create.sh to utilize pre-seeded caches

* fix(devcontainer): remove duplicate instructions and include .npmrc

* fix(devcontainer): use Maven wrapper for dependency caching

The base image mcr.microsoft.com/devcontainers/java:21-bookworm does not
have Maven pre-installed, causing the prebuild to fail with exit code 127
(mvn: command not found).

Changes:
- Use Maven wrapper (./mvnw) instead of mvn command
- Copy mvnw and .mvn/ directory for wrapper to work
- Use dependency:resolve instead of go-offline to avoid HTTP repo blocking
- Add graceful fallbacks (|| true) for partial dependency caching
- Add npm install fallback when lockfiles are out of sync

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Mohsin Hashmi <mhashmi@wiser.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: 3 people

.devcontainer/Dockerfile

@@ -89,20 +89,25 @@ RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g npm@lates
 USER vscode
 
 # Pre-cache Maven dependencies
-# Copy pom.xml files (and parent poms if needed) to a temp directory
+# Copy pom.xml, Maven wrapper, and .mvn directory
 WORKDIR /tmp/backend
-COPY --chown=vscode:vscode apps/backend/pom.xml .
-# Run go-offline to download dependencies to ~/.m2/repository
-RUN mvn dependency:go-offline -B -q
+COPY --chown=vscode:vscode apps/backend/pom.xml apps/backend/mvnw ./
+COPY --chown=vscode:vscode apps/backend/.mvn .mvn
+# Download dependencies to ~/.m2/repository
+# Uses Maven wrapper since Maven is not pre-installed in the base image
+# Note: Uses dependency:resolve instead of go-offline to avoid HTTP repository blocking issues
+# Allow partial caching if some dependencies fail (|| true)
+RUN chmod +x mvnw && ./mvnw dependency:resolve -B -q || true
 
 # Pre-cache NPM dependencies
+# Note: Using npm install with fallback to allow partial caching if lockfiles are out of sync
 WORKDIR /tmp/root
 COPY --chown=vscode:vscode package.json package-lock.json ./
-RUN . /usr/local/share/nvm/nvm.sh && npm ci --ignore-scripts
+RUN . /usr/local/share/nvm/nvm.sh && (npm ci --ignore-scripts || npm install --ignore-scripts || true)
 
 WORKDIR /tmp/frontend
 COPY --chown=vscode:vscode apps/frontend/package.json apps/frontend/package-lock.json apps/frontend/.npmrc* ./
-RUN . /usr/local/share/nvm/nvm.sh && npm ci --legacy-peer-deps --ignore-scripts
+RUN . /usr/local/share/nvm/nvm.sh && (npm ci --legacy-peer-deps --ignore-scripts || npm install --legacy-peer-deps --ignore-scripts || true)
 
 # Clean up temp directories
 USER root