chore: Reduce steps to spin up Codespaces (#2576)

.devcontainer/Dockerfile

@@ -1,11 +1,8 @@
 # The below image is created out of the Dockerfile.base
 # It has the dependencies already installed so that codespace will boot up fast
-FROM ghcr.io/sojan-official/chatwoot_codespace:latest
+FROM ghcr.io/chatwoot/chatwoot_codespace:latest
 
 # Do the set up required for chatwoot app 
 WORKDIR /workspace
 COPY . /workspace
-RUN yarn
-
-COPY Gemfile Gemfile.lock ./
-RUN gem install bundler && bundle install
+RUN yarn && gem install bundler && bundle install