style(docker): reorder instructions

Dockerfile

@@ -3,17 +3,15 @@ FROM node:lts-alpine
 # Workdir
 WORKDIR /usr/app
 
+# Copy and install packages
 COPY . .
+# Git is needed to install node modules from GitHub
+RUN apk add --no-cache git=2.24.4-r0
+RUN npm ci --ignore-scripts && npm cache clean --force
 
 # Pre-emptively make logs directory if used for logs storage set 
 # by LOG_ROTATION_FILENAME env variable 
 RUN mkdir ./logs/ && chown -R node ./logs/
-# If appropriate env file missing, use template
-RUN cp .env.template .env
-# Git is needed to install node modules from github
-RUN apk add --no-cache git=2.24.4-r0
-# Install dependencies
-RUN npm ci --ignore-scripts && npm cache clean --force
 
 # Node images provide 'node' unprivileged user to run apps and prevent
 # privilege escalation attacks