Add i686 support

.github/workflows/test.yml

@@ -15,6 +15,8 @@ jobs:
             distro: archarm_latest
           - arch: aarch64
             distro: fedora_latest
+          - arch: i686
+            distro: ubuntu18.04
           - arch: ppc64le
             distro: alpine_latest
           - arch: x86_64

Dockerfiles/Dockerfile.i686.alpine_latest

@@ -0,0 +1,5 @@
+FROM i386/alpine:latest
+
+COPY ./run-on-arch-install.sh /root/run-on-arch-install.sh
+RUN chmod +x /root/run-on-arch-install.sh && /root/run-on-arch-install.sh
+ENTRYPOINT ["linux32", "--"]

Dockerfiles/Dockerfile.i686.bullseye

@@ -0,0 +1,5 @@
+FROM i386/debian:bullseye
+
+COPY ./run-on-arch-install.sh /root/run-on-arch-install.sh
+RUN chmod +x /root/run-on-arch-install.sh && /root/run-on-arch-install.sh
+ENTRYPOINT ["linux32", "--"]

Dockerfiles/Dockerfile.i686.buster

@@ -0,0 +1,5 @@
+FROM i386/debian:buster
+
+COPY ./run-on-arch-install.sh /root/run-on-arch-install.sh
+RUN chmod +x /root/run-on-arch-install.sh && /root/run-on-arch-install.sh
+ENTRYPOINT ["linux32", "--"]

Dockerfiles/Dockerfile.i686.jessie

@@ -0,0 +1,5 @@
+FROM i386/debian:jessie
+
+COPY ./run-on-arch-install.sh /root/run-on-arch-install.sh
+RUN chmod +x /root/run-on-arch-install.sh && /root/run-on-arch-install.sh
+ENTRYPOINT ["linux32", "--"]

Dockerfiles/Dockerfile.i686.stretch

@@ -0,0 +1,5 @@
+FROM i386/debian:stretch
+
+COPY ./run-on-arch-install.sh /root/run-on-arch-install.sh
+RUN chmod +x /root/run-on-arch-install.sh && /root/run-on-arch-install.sh
+ENTRYPOINT ["linux32", "--"]

Dockerfiles/Dockerfile.x86_64.fedora_latest → Dockerfiles/Dockerfile.i686.ubuntu16.04

@@ -1,4 +1,5 @@
-FROM amd64/fedora:latest
+FROM i386/ubuntu:16.04
 
 COPY ./run-on-arch-install.sh /root/run-on-arch-install.sh
 RUN chmod +x /root/run-on-arch-install.sh && /root/run-on-arch-install.sh
+ENTRYPOINT ["linux32", "--"]

Dockerfiles/Dockerfile.x86_64.ubuntu22.04 → Dockerfiles/Dockerfile.i686.ubuntu18.04

@@ -1,4 +1,5 @@
-FROM amd64/ubuntu:22.04
+FROM i386/ubuntu:18.04
 
 COPY ./run-on-arch-install.sh /root/run-on-arch-install.sh
 RUN chmod +x /root/run-on-arch-install.sh && /root/run-on-arch-install.sh
+ENTRYPOINT ["linux32", "--"]

Dockerfiles/Dockerfile.i686.ubuntu_latest

@@ -0,0 +1,5 @@
+FROM i386/ubuntu:latest
+
+COPY ./run-on-arch-install.sh /root/run-on-arch-install.sh
+RUN chmod +x /root/run-on-arch-install.sh && /root/run-on-arch-install.sh
+ENTRYPOINT ["linux32", "--"]

README.md

@@ -8,7 +8,7 @@ A GitHub Action that executes commands on non-x86 CPU architecture (armv6, armv7
 
 This action requires three input parameters:
 
-* `arch`: CPU architecture: `armv6`, `armv7`, `aarch64`, `riscv64`, `s390x`, `ppc64le`, or `x86_64`. See [Supported Platforms](#supported-platforms) for the full matrix.
+* `arch`: CPU architecture: `armv6`, `armv7`, `aarch64`, `i686`, `riscv64`, `s390x`, `ppc64le`, or `x86_64`. See [Supported Platforms](#supported-platforms) for the full matrix.
 * `distro`: Linux distribution name: `ubuntu16.04`, `ubuntu18.04`, `ubuntu20.04`, `bullseye`, `buster`, `stretch`, `jessie`, `fedora_latest`, `alpine_latest` or `archarm_latest`. See [Supported Platforms](#supported-platforms) for the full matrix.
 * `run`: Shell commands to execute in the container.
 
@@ -155,10 +155,11 @@ This table details the valid `arch`/`distro` combinations:
 | armv6    | jessie, stretch, buster, bullseye, alpine_latest |
 | armv7    | jessie, stretch, buster, bullseye, ubuntu16.04, ubuntu18.04, ubuntu20.04, ubuntu22.04, ubuntu_latest, ubuntu_rolling, ubuntu_devel, fedora_latest, alpine_latest, archarm_latest |
 | aarch64  | stretch, buster, bullseye, ubuntu16.04, ubuntu18.04, ubuntu20.04, ubuntu22.04, ubuntu_latest, ubuntu_rolling, ubuntu_devel, fedora_latest, alpine_latest, archarm_latest |
+| i686     | jessie, stretch, buster, bullseye, ubuntu16.04, ubuntu18.04, ubuntu_latest, alpine_latest |
 | riscv64  | ubuntu20.04, ubuntu22.04, ubuntu_latest, ubuntu_rolling, ubuntu_devel, alpine_edge |
 | s390x    | jessie, stretch, buster, bullseye, ubuntu16.04, ubuntu18.04, ubuntu20.04, ubuntu22.04, ubuntu_latest, ubuntu_rolling, ubuntu_devel, fedora_latest, alpine_latest |
 | ppc64le  | jessie, stretch, buster, bullseye, ubuntu16.04, ubuntu18.04,ubuntu20.04, ubuntu22.04, ubuntu_latest, ubuntu_rolling, ubuntu_devel, fedora_latest, alpine_latest |
-| x86_64  | jessie, stretch, buster, bullseye, ubuntu16.04, ubuntu18.04, ubuntu20.04, ubuntu22.04, ubuntu_latest, ubuntu_rolling, ubuntu_devel, fedora_latest, alpine_latest |
+| x86_64   | jessie, stretch, buster, bullseye, ubuntu16.04, ubuntu18.04, ubuntu20.04, ubuntu22.04, ubuntu_latest, ubuntu_rolling, ubuntu_devel, fedora_latest, alpine_latest |
 
 
 Using an invalid `arch`/`distro` combination will fail.

action.yml

@@ -6,7 +6,7 @@ description: "Run commands in a Linux container with a specific CPU architecture
 author: "Umberto Raimondi, Elijah Shaw-Rutschman"
 inputs:
   arch:
-    description: "CPU architecture: armv6, armv7, aarch64, riscv64, s390x, ppc64le, x86_64."
+    description: "CPU architecture: armv6, armv7, aarch64, i686, riscv64, s390x, ppc64le, x86_64."
     required: false
     default: "aarch64"
   distro: