Update Dockerfile

[aleguerrero]

fixed dockerfile to run front-end since it was having errors building it

below the following error running docker-compose up

[front-end stage-0 4/6] RUN npm install:
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53.86 > node-sass@4.10.0 install /opt/forms/node_modules/@angular-devkit/build-angular/node_modules/node-sass
53.86 > node scripts/install.js
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54.04 Downloading binary from https://github.com/sass/node-sass/releases/download/v4.10.0/linux-arm64-57_binding.node
56.92 Cannot download "https://github.com/sass/node-sass/releases/download/v4.10.0/linux-arm64-57_binding.node":
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56.92 HTTP error 404 Not Found
56.92
56.92 Hint: If github.com is not accessible in your location
56.92 try setting a proxy via HTTP_PROXY, e.g.
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56.92 export HTTP_PROXY=http://example.com:1234
56.92
56.92 or configure npm proxy via
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56.92 npm config set proxy http://example.com:8080
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