Switch from Alpine -> Debian-slim (#7040)

* Switch from Alpine -> Debian-slim

* Drop arm/v6

.circleci/config.yml

@@ -126,7 +126,7 @@ jobs:
             docker buildx install
             docker context create docker-multiarch
             docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
-            docker buildx create --name docker-multiarch --platform linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x docker-multiarch
+            docker buildx create --name docker-multiarch --platform linux/amd64,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x docker-multiarch
             docker buildx inspect --builder docker-multiarch --bootstrap
             docker buildx use docker-multiarch
       - run:
@@ -142,9 +142,9 @@ jobs:
           name: Build and push Docker image
           command: |
             if [[ "$CIRCLE_TAG" == *"-"* ]]; then
-              docker buildx build -t $IMAGE_NAME:${CIRCLE_TAG/v/''} --platform linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x --push .
+              docker buildx build -t $IMAGE_NAME:${CIRCLE_TAG/v/''} --platform linux/amd64,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x --push .
             else
-              docker buildx build -t $IMAGE_NAME:latest -t $IMAGE_NAME:${CIRCLE_TAG/v/''} --platform linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x --push .
+              docker buildx build -t $IMAGE_NAME:latest -t $IMAGE_NAME:${CIRCLE_TAG/v/''} --platform linux/amd64,linux/arm/v7,linux/arm64/v8,linux/ppc64le,linux/s390x --push .
             fi
 
 workflows:

Dockerfile

@@ -5,9 +5,7 @@ ARG APP_PATH
 WORKDIR $APP_PATH
 
 # ---
-FROM node:20-alpine AS runner
-
-RUN apk update && apk add --no-cache curl && apk add --no-cache ca-certificates
+FROM node:20-slim AS runner
 
 LABEL org.opencontainers.image.source="https://github.com/outline/outline"
 
@@ -22,8 +20,9 @@ COPY --from=base $APP_PATH/.sequelizerc ./.sequelizerc
 COPY --from=base $APP_PATH/node_modules ./node_modules
 COPY --from=base $APP_PATH/package.json ./package.json
 
-RUN addgroup -g 1001 -S nodejs && \
-  adduser -S nodejs -u 1001 && \
+# Create a non-root user compatible with Debian and BusyBox based images
+RUN addgroup --gid 1001 nodejs && \
+  adduser --uid 1001 --ingroup nodejs nodejs && \
   chown -R nodejs:nodejs $APP_PATH/build && \
   mkdir -p /var/lib/outline && \
 	chown -R nodejs:nodejs /var/lib/outline

Dockerfile.base

@@ -1,5 +1,5 @@
 ARG APP_PATH=/opt/outline
-FROM node:20-alpine AS deps
+FROM node:20-slim AS deps
 
 ARG APP_PATH
 WORKDIR $APP_PATH