Split into slim and distroless variants

.github/workflows/distroless-image.yaml

@@ -0,0 +1,47 @@
+---
+name: Container image
+"on":
+  push:
+    branches:
+      - 'main'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,distroless
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          file: Dockerfile.distroless
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.github/workflows/container-image.yaml → .github/workflows/slim-image.yaml

@@ -40,12 +40,16 @@ jobs:
         uses: docker/metadata-action@v5
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,slim
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with:
+          file: Dockerfile.slim
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
+          platforms: linux/amd64,linux/arm64

Dockerfile → Dockerfile.distroless

@@ -23,6 +23,7 @@ COPY --from=builder /usr/lib/x86_64-linux-gnu/libedit.so.2 /usr/lib/x86_64-linux
 COPY --from=builder /usr/lib/x86_64-linux-gnu/libbsd.so.0 /usr/lib/x86_64-linux-gnu/libbsd.so.0
 COPY --from=builder /usr/lib/x86_64-linux-gnu/libtinfo.so.6 /usr/lib/x86_64-linux-gnu/libtinfo.so.6
 COPY --from=builder /usr/lib/x86_64-linux-gnu/libmd.so.0 /usr/lib/x86_64-linux-gnu/libmd.so.0
+COPY --from=builder /lib/terminfo /lib/terminfo
 
 COPY --from=builder /simh/BIN/pdp11 /bin/pdp11
 ENTRYPOINT ["/bin/pdp11"]

Dockerfile.slim

@@ -0,0 +1,30 @@
+FROM docker.io/library/debian:12.4-slim as builder
+
+RUN DEBIAN_FRONTEND=noninteractive apt-get update \
+ && apt-get install -y --no-install-recommends \
+ build-essential=12.9 \
+ ca-certificates=20230311 \
+ git=1:2.39.2-1.1 \
+ sudo=1.9.13p3-1+deb12u1
+ # Not removing cache here because the deps.sh script can use it.
+ # The cache will not be in the final stage of the image anyway.
+
+RUN mkdir /simh \
+ && git clone --depth 1 https://github.com/open-simh/simh.git /simh \
+ && /simh/.travis/deps.sh linux \
+ && /simh/cmake/cmake-builder.sh --novideo --noinstall --parallel --target pdp11
+
+FROM docker.io/library/debian:12.4-slim
+
+RUN DEBIAN_FRONTEND=noninteractive apt-get update \
+ && apt-get install -y --no-install-recommends \
+ libvdeplug2=4.0.1-4 \
+ libpcre3=2:8.39-15 \
+ libedit2=3.1-20221030-2 \
+ libbsd0=0.11.7-2 \
+ libmd0=1.0.4-2 \
+ ncurses-base=6.4-4 \
+ && rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /simh/BIN/pdp11 /bin/pdp11
+CMD ["/bin/pdp11"]