From b8fd319df1cf30c4e0d9f1c11338d8f5aea7b0ab Mon Sep 17 00:00:00 2001
From: Eduardo Folly <edufolly@gmail.com>
Date: Thu, 19 Sep 2024 11:38:01 -0300
Subject: [PATCH] Version 0.0.1.

---
 .github/workflows/main.yml | 72 ++++++++++++++++++++++++++++++++++++++
 Dockerfile                 |  9 +++++
 README.md                  |  2 ++
 entrypoint.sh              | 18 ++++++++++
 version.yaml               |  1 +
 5 files changed, 102 insertions(+)
 create mode 100644 .github/workflows/main.yml
 create mode 100644 Dockerfile
 create mode 100755 entrypoint.sh
 create mode 100644 version.yaml

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..707f922
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,72 @@
+name: CI Build
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    permissions:
+      contents: write
+    steps:
+      - name: Code Checkout
+        uses: actions/checkout@v4
+
+      - name: Get Version
+        run: |
+          echo "TAGS=latest" >> $GITHUB_ENV
+          SUFFIX=""
+          VERSION=$(grep 'version:' version.yaml | cut -c 10-)$SUFFIX
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+          echo "REPO=$GITHUB_REPOSITORY" >> $GITHUB_ENV
+          echo "OWNER=$GITHUB_REPOSITORY_OWNER" >> $GITHUB_ENV
+
+      - name: Check if version is used
+        run: |
+          URL=$GITHUB_API_URL/repos/$GITHUB_REPOSITORY/releases/tags/${{ env.VERSION }}
+          echo "$URL"
+          CODE=$(curl -s -o /dev/null -w "%{http_code}" "$URL")
+          if [ "$CODE" != 404 ]; then
+            echo "Release '$VERSION' already exists. ($CODE)"
+            exit 1
+          fi
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ env.OWNER }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: Docker Build & Push
+        uses: docker/build-push-action@v6
+        with:
+          push: true
+          context: .
+          file: Dockerfile
+          platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/arm/v6,linux/386
+          tags: |
+            ${{ env.REPO }}:${{ env.VERSION }}
+            ${{ env.REPO }}:latest
+
+      - name: Creating GitHub Tag
+        uses: mathieudutour/github-tag-action@v6.2
+        with:
+          custom_tag: ${{ env.VERSION }}
+          tag_prefix: ''
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create GitHub Release
+        uses: ncipollo/release-action@v1
+        with:
+          tag: ${{ env.VERSION }}
+          token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..cf789ec
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,9 @@
+FROM alpine:${ALPINE_VERSION:-3.20}
+
+RUN apk add --update --no-cache busybox-extras envsubst
+
+COPY entrypoint.sh /usr/local/bin/
+
+EXPOSE 23
+
+ENTRYPOINT ["entrypoint.sh"]
diff --git a/README.md b/README.md
index 6e02279..0595615 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,8 @@ Run:
 
 ```shell
 docker run -d --rm --name telnetd -p 2323:23 \
+  -e TELNET_USER=telnetuser \
+  -e TELNET_PWD=MySecret123! \
   telnetd-container
 ```
 
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100755
index 0000000..b30c476
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+echo "ENTRYPOINT"
+
+if [ -z "$TELNET_USER" ]; then
+  export TELNET_USER="test"
+fi
+
+if [ -z "$TELNET_PWD" ]; then
+  export TELNET_PWD="VeryDifficult246!"
+fi
+
+adduser -D "$TELNET_USER"
+
+passwd "$TELNET_USER" -d "$TELNET_PWD"
+
+### Start telnetd.
+/usr/sbin/telnetd -F
diff --git a/version.yaml b/version.yaml
new file mode 100644
index 0000000..b1465aa
--- /dev/null
+++ b/version.yaml
@@ -0,0 +1 @@
+version: 0.0.1