Ubuntu is the default image

Author: monadius

Dockerfile

@@ -1,16 +1,15 @@
-FROM alpine:3.17 AS builder
+FROM ubuntu:22.04 AS Builder
 
 ENV OPAMROOT=/opt/ocaml
 
 RUN set -ex; \
     mkdir -p $OPAMROOT; \
-    adduser -D codewarrior; \
-    chown -R codewarrior:codewarrior /opt/ocaml; \
-    apk update; \
-    apk add --virtual .build-deps \
-        build-base \
-        ocaml-compiler-libs \
-        gmp-dev \
+    useradd --create-home codewarrior; \
+    chown codewarrior:codewarrior $OPAMROOT; \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
+        software-properties-common \
+        libgmp-dev \
         opam \
     ;
 
@@ -31,14 +30,16 @@ RUN set -ex; \
         'zarith=1.12' \
     ;
 
-FROM alpine:3.17
+FROM ubuntu:22.04
 
 RUN set -ex; \
-    apk add --no-cache \
+    apt-get update; \
+    apt-get install -y --no-install-recommends \
         gcc \
-        gmp-dev \
-        musl-dev \
-    ;
+        libc6-dev \
+        libgmp-dev \
+    ; \
+    rm -rf /var/lib/apt/lists/*;
 
 COPY --from=builder \
     /opt/ocaml/5.0.0/bin/ocamlc.opt \
@@ -51,13 +52,13 @@ COPY --from=builder \
     /opt/ocaml/5.0.0/lib/ /opt/ocaml/5.0.0/lib/
 
 RUN set -ex; \
-    adduser -D codewarrior; \
-    mkdir /workspace; \
+    useradd --create-home codewarrior; \
+    mkdir -p /workspace; \
     chown -R codewarrior:codewarrior /workspace;
 
 USER codewarrior
 ENV USER=codewarrior \
     PATH=/opt/ocaml/5.0.0/bin:$PATH
 
 COPY --chown=codewarrior:codewarrior workspace/. /workspace/
-WORKDIR /workspace
+WORKDIR /workspace

DockerfileUbuntu renamed to DockerfileAlpine

@@ -1,15 +1,16 @@
-FROM ubuntu:22.04 AS Builder
+FROM alpine:3.17 AS builder
 
 ENV OPAMROOT=/opt/ocaml
 
 RUN set -ex; \
     mkdir -p $OPAMROOT; \
-    useradd --create-home codewarrior; \
-    chown codewarrior:codewarrior $OPAMROOT; \
-    apt-get update; \
-    apt-get install -y --no-install-recommends \
-        software-properties-common \
-        libgmp-dev \
+    adduser -D codewarrior; \
+    chown -R codewarrior:codewarrior /opt/ocaml; \
+    apk update; \
+    apk add --virtual .build-deps \
+        build-base \
+        ocaml-compiler-libs \
+        gmp-dev \
         opam \
     ;
 
@@ -30,16 +31,14 @@ RUN set -ex; \
         'zarith=1.12' \
     ;
 
-FROM ubuntu:22.04
+FROM alpine:3.17
 
 RUN set -ex; \
-    apt-get update; \
-    apt-get install -y --no-install-recommends \
+    apk add --no-cache \
         gcc \
-        libc6-dev \
-        libgmp-dev \
-    ; \
-    rm -rf /var/lib/apt/lists/*;
+        gmp-dev \
+        musl-dev \
+    ;
 
 COPY --from=builder \
     /opt/ocaml/5.0.0/bin/ocamlc.opt \
@@ -52,13 +51,13 @@ COPY --from=builder \
     /opt/ocaml/5.0.0/lib/ /opt/ocaml/5.0.0/lib/
 
 RUN set -ex; \
-    useradd --create-home codewarrior; \
-    mkdir -p /workspace; \
+    adduser -D codewarrior; \
+    mkdir /workspace; \
     chown -R codewarrior:codewarrior /workspace;
 
 USER codewarrior
 ENV USER=codewarrior \
     PATH=/opt/ocaml/5.0.0/bin:$PATH
 
 COPY --chown=codewarrior:codewarrior workspace/. /workspace/
-WORKDIR /workspace
+WORKDIR /workspace

bin/alpine_build

@@ -0,0 +1 @@
+docker build -f DockerfileAlpine -t ocaml:alpine .

bin/alpine_run

@@ -0,0 +1,2 @@
+export IMAGE=ocaml:alpine
+exec "$(dirname "$0")/run" "$@"

bin/build

@@ -1 +1 @@
-docker build -t ocaml:alpine .
+docker build -t ghcr.io/codewars/ocaml:latest .

bin/run

@@ -1,7 +1,13 @@
+set -eu
+
+if [ -z "${IMAGE:+x}" ]; then
+  IMAGE=ghcr.io/codewars/ocaml:latest
+fi
+
 W=/workspace
 # Create container
 BUILD="ocamlbuild -quiet -use-ocamlfind cwtest.native"
-C=$(docker container create --rm -w $W ocaml:alpine sh -c "$BUILD && exec ./cwtest.native")
+C=$(docker container create --rm -w $W $IMAGE sh -c "$BUILD && exec ./cwtest.native")
 
 # Copy files
 docker container cp ${1:-examples/basic}/. $C:$W