chore: local env defaults and update dev deps (#925)

This pull request introduces several small improvements to the
development environment and configuration files. The changes focus on
enhancing developer experience, improving local development defaults,
and updating ignore patterns for frontend builds.

Configuration and environment improvements:

* Updated the `docker-compose.yml` service environment variables to
provide default values (`local`) for `BUILD_TAG` and `GIT_SHA`, making
local development setup easier without requiring these variables to be
set explicitly.
* Added `yaml-dev` to the list of packages installed in the
`.devcontainer/Dockerfile`, ensuring YAML development dependencies are
available in the dev container.

Frontend build and output management:

* Updated `.prettierignore` in the frontend to ignore the `dist/`
directory, preventing generated build output from being formatted or
linted by Prettier.

Author: gildesmarais

.devcontainer/Dockerfile

@@ -13,6 +13,7 @@ RUN apk add --no-cache \
     npm \
     openssl-dev \
     python3 \
+    yaml-dev \
     tzdata
 
 ARG USER=vscode

docker-compose.yml

@@ -13,8 +13,8 @@ services:
     environment:
       RACK_ENV: production
       PORT: 4000
-      BUILD_TAG: ${BUILD_TAG:?set BUILD_TAG}
-      GIT_SHA: ${GIT_SHA:?set GIT_SHA}
+      BUILD_TAG: ${BUILD_TAG:-local}
+      GIT_SHA: ${GIT_SHA:-local}
       HTML2RSS_SECRET_KEY: ${HTML2RSS_SECRET_KEY:?set HTML2RSS_SECRET_KEY}
       HEALTH_CHECK_TOKEN: ${HEALTH_CHECK_TOKEN:?set HEALTH_CHECK_TOKEN}
       SENTRY_DSN: ${SENTRY_DSN:-}

frontend/.prettierignore

@@ -4,5 +4,6 @@ yarn.lock
 
 # Generated and transient frontend output
 .astro/
+dist/
 test-results/
 src/api/generated/