Correction du Dockerfile.

Dockerfile

 ARG NODE_VERSION=12
 ARG DEBIAN_RELEASE=buster
-FROM node:${NODE_VERSION}-${DEBIAN_RELEASE} AS builder
 
-RUN apt-get update -yq && apt-get install -yq unzip xz-utils wget
-
-RUN mkdir /src
-
-ARG REVEALJS_VERSION=v1.2.0
-RUN wget -nv -O /tmp/reveal.js.zip https://gitlab.irstea.fr/pole-is/tools/reveal.js/-/archive/${REVEALJS_VERSION}/reveal.js-${REVEALJS_VERSION}.zip \
-    && cd src \
-    && unzip /tmp/reveal.js.zip \
-    && mv reveal.js-${REVEALJS_VERSION} reveal.js \
-    && cd reveal.js \
-    && ./pleasew build :reveal.js
-
-FROM node:${NODE_VERSION}-${DEBIAN_RELEASE}-slim
-
-COPY --from=builder /src/reveal.js/plz-out/gen/reveal.js /opt/reveal.js
+FROM node:${NODE_VERSION}-${DEBIAN_RELEASE}
 
 RUN apt-get update -yq \
     && apt-get install -yq --no-install-recommends \
@@ -54,8 +39,7 @@ COPY gulpfile.esm.js package.json package-lock.json /opt/prezbuilder/
 
 ENV NODE_ENV=production
 RUN cd /opt/prezbuilder/ \
-    && ls -la \
-    && NPM_CONFIG_CACHE=/tmp/.npm npm install \\
+    && env NPM_CONFIG_CACHE=/tmp/.npm npm install \
     && rm -rf /tmp/.npm
 
 ENV SERVER_HOST=0.0.0.0 \