💚 ci: better dockerfile (only supporting pnpm)

Signed-off-by: Muhammed Hussein Karimi <info@karimi.dev>

Dockerfile

@@ -7,12 +7,8 @@ WORKDIR /app
 
 # Install dependencies based on the preferred package manager
 COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* ./
-RUN --mount=type=cache,target=/app/node_modules \
-  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
-  elif [ -f package-lock.json ]; then npm ci; \
-  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
-  else echo "Lockfile not found." && exit 1; \
-  fi
+RUN --mount=type=cache,target=/root/.pnpm-store \
+  corepack enable pnpm && pnpm i --frozen-lockfile
 
 
 # Rebuild the source code only when needed
@@ -24,11 +20,7 @@ COPY . .
 ENV NEXT_TELEMETRY_DISABLED 1
 
 RUN --mount=type=cache,target=/app/.next/cache \
-  if [ -f yarn.lock ]; then yarn run build; \
-  elif [ -f package-lock.json ]; then npm run build; \
-  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
-  else echo "Lockfile not found." && exit 1; \
-  fi
+  corepack enable pnpm && pnpm run build
 
 # Production image, copy all the files and run next
 FROM base AS runner