build: update npm to v7 in Dockerfile and .gitlabci.yml

.gitlab-ci.yml

@@ -26,9 +26,10 @@ before_script:
   - php composer-setup.php
   - php -r "unlink('composer-setup.php');"
 
-  # Install NodeJS for NPM
+  # Install latest npm
   - curl -sL https://deb.nodesource.com/setup_lts.x | bash -
   - apt-get update && apt-get install -y nodejs
+  - npm install --global npm
 
   # Install all php dependencies
   - php composer.phar install --prefer-dist --no-ansi --no-interaction --no-progress --ignore-platform-reqs

Dockerfile

@@ -15,14 +15,13 @@ WORKDIR /castopod-host
 # Install composer
 COPY --from=composer:latest /usr/bin/composer /usr/bin/composer
 
-# Install npm
-RUN curl -fsSL https://deb.nodesource.com/setup_lts.x | bash -
-
+# Install latest npm
 RUN apt-get update && \
-    apt-get install -y nodejs
-
-# update npm to latest version
-RUN npm install --global npm
+    apt-get install -y --no-install-recommends gnupg && \
+    curl -fsSL https://deb.nodesource.com/setup_lts.x | bash - && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends nodejs && \
+    npm install --global npm
 
 # Install git + vim
 RUN apt-get update && \