Fix GHA buildx file path (#987)

* Fix GHA buildx file path

* Try defaultContext handlebars

* Update devcore build step

---------

Co-authored-by: Laura Mosher <[email protected]>

Author: lauramosher

.github/workflows/on-merge-master.yml

@@ -23,8 +23,8 @@ jobs:
     - name: Build and push
       uses: docker/build-push-action@v5
       with:
-        context: .
-        file: "{{defaultContext}}/rails/Dockerfile"
+        context: "{{defaultContext}}"
+        file: ./rails/Dockerfile
         target: devcore
         platforms: linux/amd64,linux/arm64,linux/arm/v7
         push: true

.github/workflows/on-release.yml

@@ -21,8 +21,8 @@ jobs:
     - name: Build and push
       uses: docker/build-push-action@v5
       with:
-        context: .
-        file: "{{defaultContext}}/rails/Dockerfile"
+        context: "{{defaultContext}}"
+        file: ./rails/Dockerfile
         platforms: linux/amd64,linux/arm64,linux/arm/v7
         push: true
         tags: |

rails/Dockerfile

@@ -28,7 +28,6 @@ RUN apk --no-cache add --update \
     imagemagick \
     ffmpeg \
     poppler && \
-    gem update --system --no-document && \
     gem install bundler --no-document --force -v '~> 2.4.7'
 
 WORKDIR /tmp