Docker improvements

.github/workflows/docker.yml

@@ -0,0 +1,52 @@
+name: Docker
+
+on:
+  push:
+    branches:
+      - master
+      - github-docker
+    tags:
+      - '*'
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+        id: buildx
+        with:
+          install: true
+
+      - name: Set Docker metadata
+        id: meta-ubuntu
+        uses: docker/metadata-action@v4
+        with:
+          images: |
+            ghcr.io/${{ github.repository }}
+          tags: |
+            type=ref,event=tag
+            type=ref,event=branch,prefix=testing-
+            type=edge
+
+      - name: GitHub Container Registry Login
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker Build and Push
+        uses: docker/build-push-action@v3
+        with:
+          platforms: linux/amd64
+          file: Dockerfile
+          pull: true
+          push: true
+          tags: ${{ steps.meta-ubuntu.outputs.tags }}
+          labels: ${{ steps.meta-ubuntu.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Dockerfile

@@ -1,18 +1,6 @@
 FROM trailofbits/echidna:latest
 
-RUN apt-get update && apt-get install -y python3.8-dev
-RUN update-alternatives --install /usr/bin/python python /usr/bin/python3.8 1 && \
-    update-alternatives  --set python /usr/bin/python3.8
-
-RUN python -m pip install --upgrade pip
-
-RUN mkdir /optik
 COPY . /optik
-
-WORKDIR /optik
-
-RUN python -m pip install .
-
-RUN mkdir /workdir
+RUN pip3 install --no-cache-dir /optik
 
 WORKDIR /workdir