Error during build: Platform 'arduino:avr' not found in GCP

[Sphinx]

Hi Everyone,

I am Running a docker node application on GCP. I have defined the docker file as following

FROM alpine:latest

RUN apk update
RUN apk upgrade

RUN apk add curl
RUN apk add --no-cache libstdc++ gcompat
RUN apk add --update nodejs npm
RUN curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh


RUN arduino-cli core update-index
RUN arduino-cli core install arduino:avr

WORKDIR /usr/src/app

COPY package*.json ./
RUN npm install

COPY . .
EXPOSE 8080
CMD [ "npm", "start" ]

During the build in docker registy the CLI clearly shows that arduino:avr gets installed.

Step 8/15 : RUN arduino-cli core update-index
 Running in bd32bf6755bf
Downloading index: library_index.json.gz downloaded
Downloading index signature: library_index.json.sig downloaded
Downloading index: package_index.tar.bz2 downloaded
Downloading index: package_index.tar.bz2 downloaded
Removing intermediate container bd32bf6755bf
 daec699a0fa9
Step 9/15 : RUN arduino-cli core install arduino:avr
 Running in 33b18d291106
Downloading missing tool builtin:ctags@5.8-arduino11...
builtin:ctags@5.8-arduino11 downloaded
Installing builtin:ctags@5.8-arduino11...
builtin:ctags@5.8-arduino11 installed
Downloading missing tool builtin:serial-discovery@1.3.2...
builtin:serial-discovery@1.3.2 downloaded
Installing builtin:serial-discovery@1.3.2...
builtin:serial-discovery@1.3.2 installed
Downloading missing tool builtin:mdns-discovery@1.0.6...
builtin:mdns-discovery@1.0.6 downloaded
Installing builtin:mdns-discovery@1.0.6...
builtin:mdns-discovery@1.0.6 installed
Downloading missing tool builtin:serial-monitor@0.9.1...
builtin:serial-monitor@0.9.1 downloaded
Installing builtin:serial-monitor@0.9.1...
builtin:serial-monitor@0.9.1 installed
Downloading packages...
arduino:avr-gcc@7.3.0-atmel3.6.1-arduino7 downloaded/ 35.89 MiB   49.96%
arduino:avrdude@6.3.0-arduino17 downloaded
arduino:arduinoOTA@1.3.0 downloaded
arduino:avr@1.8.5 downloaded
Installing arduino:avr-gcc@7.3.0-atmel3.6.1-arduino7...
arduino:avr-gcc@7.3.0-atmel3.6.1-arduino7 installed
Installing arduino:avrdude@6.3.0-arduino17...
arduino:avrdude@6.3.0-arduino17 installed
Installing arduino:arduinoOTA@1.3.0...
arduino:arduinoOTA@1.3.0 installed
Installing platform arduino:avr@1.8.5...
Skipping platform configuration....
Platform arduino:avr@1.8.5 installed
Removing intermediate container 33b18d291106
 f762d52d4b9b

But when I try to run a POST request I get an error saying that arduino:avr is not found

curl -X POST -H "Content-Type: application/json" -H "Authorization: Bearer $(gcloud auth print-identity-token)" -d "{\"sketch\":\"// LEDs connected to pins 5\n\nvoid setup() {\n  pinMode(5, OUTPUT);\n}\n\nvoid loop() {\n  digitalWrite(5, HIGH);\n  delay(250);\n  digitalWrite(5, LOW);\n  delay(250);\n}\"}" $(echo $SERVICE_URL)
{"stdout":"","stderr":"Error during build: Platform 'arduino:avr' not found: platform not installed\nTry running `arduino-cli core install arduino:avr`\n","hex":"","eep":""}

I've tried running the app locally on my pc as well as on gcloud and it works flawlessly.

Thanks in advance.