Switch to Azure Linux (#1418)

* Switch to Azure Linux base image (#1410)

- Reduces the overall final image size by using Azure Linux
- Offers maximum compatibility with Azure infrastructure
- Supported by Microsoft

* Add missing software packages

* Ensure user can access necessary files

* Remove dependency on existing layer

* Removed unused prose

Dockerfile

@@ -1,15 +1,19 @@
-# Stage 1
-ARG ASPNET_SDK_TAG=8.0
-ARG ASPNET_IMAGE_TAG=8.0-bookworm-slim
-ARG NODEJS_IMAGE_TAG=20.17-bullseye
+# Set the major version of dotnet
+ARG DOTNET_VERSION=8.0
+# Set the major version of nodejs
+ARG NODEJS_VERSION_MAJOR=22
+
 ARG COMMIT_SHA=not-set
 
 # ==============================================
 # Base SDK
 # ==============================================
-FROM "mcr.microsoft.com/dotnet/sdk:${ASPNET_SDK_TAG}" AS builder
+FROM "mcr.microsoft.com/dotnet/sdk:${DOTNET_VERSION}-azurelinux3.0" AS builder
 ARG COMMIT_SHA
 WORKDIR /build
+RUN ["tdnf", "update"]
+RUN ["tdnf", "install", "-y", "jq"]
+RUN ["tdnf", "clean", "all"]
 COPY ConcernsCaseWork/. .
 RUN dotnet restore ConcernsCaseWork
 RUN dotnet build ConcernsCaseWork "/p:customBuildMessage=Manifest commit SHA... ${COMMIT_SHA};" -c Release
@@ -34,31 +38,31 @@ RUN dotnet ef migrations bundle -r linux-x64 --configuration Release -p Concerns
 # ==============================================
 # Entity Framework: Migration Runner
 # ==============================================
-FROM "mcr.microsoft.com/dotnet/aspnet:${ASPNET_IMAGE_TAG}" AS initcontainer
+FROM "mcr.microsoft.com/dotnet/aspnet:${DOTNET_VERSION}-azurelinux3.0" AS initcontainer
 WORKDIR /sql
 COPY --from=efbuilder /sql /sql
 COPY --from=builder /app/appsettings* /ConcernsCaseWork/
+RUN chown "$APP_UID" "/sql" -R
+RUN chown "$APP_UID" "/ConcernsCaseWork" -R
+USER $APP_UID
 
 # ==============================================
 # Front End Builder
 # ==============================================
-FROM node:${NODEJS_IMAGE_TAG} AS frontend
-COPY --from=builder /app/wwwroot /app/wwwroot
+FROM "node:${NODEJS_VERSION_MAJOR}-bullseye-slim" AS frontend
+COPY ConcernsCaseWork/ConcernsCaseWork/wwwroot /app/wwwroot
 WORKDIR /app/wwwroot
 RUN npm install
 RUN npm run build
 
 # ==============================================
 # Application
 # ==============================================
-FROM "mcr.microsoft.com/dotnet/aspnet:${ASPNET_IMAGE_TAG}" AS final
-LABEL org.opencontainers.image.source=https://github.com/DFE-Digital/record-concerns-support-trusts
-ARG COMMIT_SHA
+FROM "mcr.microsoft.com/dotnet/aspnet:${DOTNET_VERSION}-azurelinux3.0" AS final
+LABEL org.opencontainers.image.source="https://github.com/DFE-Digital/record-concerns-support-trusts"
 COPY --from=builder /app /app
 COPY --from=frontend /app/wwwroot /app/wwwroot
 COPY ./script/web-docker-entrypoint.sh /app/docker-entrypoint.sh
 WORKDIR /app
-RUN chown -R app:app /app
 RUN chmod +x ./docker-entrypoint.sh
-USER app
-EXPOSE 8080/tcp
+USER $APP_UID

script/set-appsettings-release-tag.sh

@@ -4,8 +4,6 @@
 set -e
 set -o pipefail
 
-apt-get update && apt-get install jq -y
-
 RELEASE_TAG="$1"
 
 APP_SETTINGS_FILES=(