🎨(docker) convert to uppercase 'as' keyword

Match 'FROM' casing, to remove a warning.

Dockerfile

@@ -1,7 +1,7 @@
 # Django Meet
 
 # ---- base image to inherit from ----
-FROM python:3.12.6-alpine3.20 as base
+FROM python:3.12.6-alpine3.20 AS base
 
 # Upgrade pip to its latest release to speed up dependencies installation
 RUN python -m pip install --upgrade pip setuptools
@@ -11,7 +11,7 @@ RUN apk update && \
   apk upgrade
 
 # ---- Back-end builder image ----
-FROM base as back-builder
+FROM base AS back-builder
 
 WORKDIR /builder
 
@@ -23,7 +23,7 @@ RUN mkdir /install && \
 
 
 # ---- mails ----
-FROM node:20 as mail-builder
+FROM node:20 AS mail-builder
 
 COPY ./src/mail /mail/app
 
@@ -34,7 +34,7 @@ RUN yarn install --frozen-lockfile && \
 
 
 # ---- static link collector ----
-FROM base as link-collector
+FROM base AS link-collector
 ARG MEET_STATIC_ROOT=/data/static
 
 RUN apk add \
@@ -58,7 +58,7 @@ RUN DJANGO_CONFIGURATION=Build DJANGO_JWT_PRIVATE_SIGNING_KEY=Dummy \
 RUN rdfind -makesymlinks true -followsymlinks true -makeresultsfile false ${MEET_STATIC_ROOT}
 
 # ---- Core application image ----
-FROM base as core
+FROM base AS core
 
 ENV PYTHONUNBUFFERED=1
 
@@ -93,7 +93,7 @@ WORKDIR /app
 ENTRYPOINT [ "/usr/local/bin/entrypoint" ]
 
 # ---- Development image ----
-FROM core as backend-development
+FROM core AS backend-development
 
 # Switch back to the root user to install development dependencies
 USER root:root
@@ -119,7 +119,7 @@ ENV DB_HOST=postgresql \
 CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]
 
 # ---- Production image ----
-FROM core as backend-production
+FROM core AS backend-production
 
 ARG MEET_STATIC_ROOT=/data/static
 

src/frontend/Dockerfile

@@ -1,4 +1,4 @@
-FROM node:20-alpine as frontend-deps
+FROM node:20-alpine AS frontend-deps
 
 WORKDIR /home/frontend/
 
@@ -11,11 +11,11 @@ COPY .dockerignore ./.dockerignore
 COPY ./src/frontend/ .
 
 ### ---- Front-end builder image ----
-FROM frontend-deps as meet
+FROM frontend-deps AS meet
 
 WORKDIR /home/frontend
 
-FROM frontend-deps as meet-dev
+FROM frontend-deps AS meet-dev
 
 WORKDIR /home/frontend
 
@@ -25,14 +25,14 @@ CMD [ "npm", "run", "dev"]
 
 # Tilt will rebuild Meet target so, we dissociate meet and meet-builder
 # to avoid rebuilding the app at every changes.
-FROM meet as meet-builder
+FROM meet AS meet-builder
 
 WORKDIR /home/frontend
 
 RUN npm run build
 
 # ---- Front-end image ----
-FROM nginxinc/nginx-unprivileged:1.26-alpine as frontend-production
+FROM nginxinc/nginx-unprivileged:1.26-alpine AS frontend-production
 
 # Un-privileged user running the application
 ARG DOCKER_USER