create docker CI workflow

Author: abdfnx

.gitattributes

@@ -0,0 +1,43 @@
+name: Publish to DockerHub
+
+on:
+  workflow_dispatch:
+    inputs:
+      release_tag:
+        description: "Coder Server release tag"
+        required: true
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+
+    name: Build and publish Docker image
+    steps:
+      - name: Checkout the repo
+        uses: actions/checkout@v2
+
+      - name: Set Version
+        run: |
+          echo "VERSION=$(echo ${{ github.event.inputs.release_tag }} | sed -nre 's/^[^0-9]*(([0-9]+\.)*[0-9]+).*/\1/p')" >> $GITHUB_ENV
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: |
+            smcr/coder-container
+          tags: |
+            type=semver,pattern={{version}},value=v${{ env.VERSION }}
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_ID }}
+          password: ${{ secrets.DOCKER_SECMAN_TOKEN }}
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}

.github/workflows/dockerhub.yml

@@ -1,13 +1,13 @@
-export ZSH="/home/coder/.oh-my-zsh"
-
-ZSH_THEME="af-magic"
-
-plugins=( git zsh-syntax-highlighting zsh-autosuggestions )
-
-source $ZSH/oh-my-zsh.sh
-
-alias s="source ~/.zshrc"
-alias n="nano ~/.zshrc"
-alias update="sudo apt update"
-alias upgrade="sudo apt upgrade"
-alias py="python3"
+export ZSH="/home/coder/.oh-my-zsh"
+
+ZSH_THEME="af-magic"
+
+plugins=( git zsh-syntax-highlighting zsh-autosuggestions )
+
+source $ZSH/oh-my-zsh.sh
+
+alias s="source ~/.zshrc"
+alias n="nano ~/.zshrc"
+alias update="sudo apt update"
+alias upgrade="sudo apt upgrade"
+alias py="python3"